CBSE > Class 10 | CBSE Board | Homework Help

Height of pole=AB=6 m Length of shadow of pole =BC=4 m Length of shadow of tower=EF=28 m In △ABC and △DEF ∠B=∠E=90∘ both 90∘ as both are vertical to ground ∠C=∠F (same elevation in both the cases as both shadows are cast at the same time) ∴△ABC∼△DEF by AA similarity criterion We know that if two triangles are similar, ratio of their sides are in proportion So,DEAB=EFBC ⇒DE6=284 ⇒DE=6×7=42 m Hence the height of the tower is 42 m I hope it will help you??

0Thank You

ANSWER

Two poles of equal heights are standing opposite each other on either side of the road which is 80m wide. From a point O between them on the road, the angles of elevation of the top of the poles are 600 and 300 respectively. Find the height of the poles and the distances of the point from the poles.

Posted by C Akhilesh 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 9 months ago

0Thank You

ANSWER

Show that the points (1,7), (4,2), (-1,-1) and (-4,4) are the vertices of a square

Posted by C Akhilesh 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 9 months ago

0Thank You

ANSWER

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km downstream. Determine the speed of the stream and that of the boat in still water

Posted by C Akhilesh 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

You recently read an article that Rajasthan and Delhi Government banned selling and purchase of Firecrackers prior to festive season. You appreciate the timely action as firecrackers are not only big source of air pollution but also noise pollution. Write an open letter to The Chronicle, a daily suggesting other ways to curb pollution. You are Rohit/ Rohita A 91, Deepmala society, Jaipur. Write the letter in about 100-120 words.

Posted by Account Deleted 4 years, 9 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Sia ? 4 years, 9 months ago

A 91,
DEEPMALA SOCIETY,
JAIPUR, RAHASTHAN.

X-MONTH-20XX

TO
THE EDITOR
JAIPUR.

SUBJECT = APPRECIATING INDIAN GOVERNMENT FOR BANNING OF FIRE CRACKERS.

SIR, MAM,

THROUGH THE ESTEEM COLUMN OF YOUR NEWS PAPER I HAVE READ AN ARTICLE ABOUT BANNING OF FIRE CRACKERS. I FELT HAPPY AT THAT TIME AS I WAS THINKING THAT OUS SOCIETY IS GOING TO EXEMPTED FROM THIS POPULATED ENVIRONMENT AND HAZARDUOUS NOICE OF THE CHRACKERS.
I ALSO AGREE WITH THAT BUT THE POLLUTION IS NOT CONTROLLED YET.
JUST LIKE DELHI AND RAJASTHAN WE HAVE TO CHECK ALL PART OF THE COUNTRY AS WELL.NOT ONLY THE FIRE CRACKERS POLLUTE THE ENVIRONMENT BUT THE CARS AND AUTOMOBILE VEHICLES, FACTORIES, ETC ALSO. SO, WE SHOLD HAVE TO CONTROLL THIS BY USING PUBLIC TRANSPORT, CONSERVATION OF NATURAL RECOURCES ETC.
" LIFE IS ONE AND WE SHOUDNT LET THE POLLUTION (WHICH IS OBVIOUSLY SPREADED BY US) RUIN THIS "
I WILL WAIT FOR YOUR PROMPT REPLY

THANKYOU

YOUR SINCERELY,
ROHIT

0Thank You

ANSWER

Name the industry which is self -reliant and complete in the value chain

Posted by Sakshi Kumar 5 years, 2 months ago

CBSE > Class 10 > Social Science

4 answers

Archana Nair 5 years, 2 months ago

Textile industry

0Thank You

Mrunal Shelar 5 years, 2 months ago

Textile industry

1Thank You

Harini . 5 years, 2 months ago

Textile industry

0Thank You

Bharti Bharadwaj 5 years, 2 months ago

Textile industry

0Thank You

ANSWER

Prove that opposite side of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

Posted by Pihu ✨ 4 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 9 months ago

Let ABCD be a quadrilateral circumscribing a circle with centre O.
Now join AO, BO, CO, DO.
From the figure, ∠DAO=∠BAO [Since, AB and AD are tangents]
Let ∠DAO=∠BAO=1
Also ∠ABO=∠CBO [Since, BA and BC are tangents]
Let ∠ABO=∠CBO=2
Similarly we take the same way for vertices C and D
Sum of the angles at the centre is 360^o
Recall that sum of the angles in quadrilateral, ABCD = 360^o

= 2(1+2+3+4)=360^o
=1+2+3+4=180^o
In ΔAOB, ∠BOA=180−(1+2)
In ΔCOD, ∠COD=180−(3+4)
∠BOA+∠COD=360−(1+2+3+4)

=360^o–180^o
=180^o

Since AB and CD subtend supplementary angles at O.
Thus, opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

0Thank You

ANSWER

Who is Mr Gupta yaar so irritating

Posted by # Anushka Negi 5 years, 2 months ago

CBSE > Class 10 > Other Subjects

2 answers

Rounak Kumar 5 years, 2 months ago

Vansh gotta

0Thank You

# Anushka Negi 5 years, 2 months ago

Please reply vansh Gupta

0Thank You

ANSWER

The length of a tangent from a point A at distance 5cm from the centre of the circle is 4cm. Find the radius of the circle.

Posted by Pihu ✨ 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Kiran Chaudhri 5 years, 2 months ago

Let AT be the tangent drawn from a point A to a circle with centre O and OA=5 cm and AT=4 cm. Since tangent at a point is perpendicular to the radius through the point of contact ∴OT⊥AT ∴ from right angled △OAT, (OA)2=(OT)2+(TA)2 ⇒(5)2=(OT)2+(4)2 ⇒25−16=(OT)2 ⇒9=(OT)2 ⇒OT=3 cm ∴ radius of the circle =3 cm.

1Thank You

ANSWER

Explain the advantages of decentralization

Posted by Krish Mishra 5 years, 2 months ago

CBSE > Class 10 > Social Science

1 answers

Bharti Bharadwaj 5 years, 2 months ago

It reduce the burden on top executives Quick decision has been taken It provides better contol supervision

1Thank You

ANSWER

Poonam has made a chart and a poster on earth day

Posted by Soumya Bhaskar 5 years, 2 months ago

CBSE > Class 10 > Information Technology (402)

3 answers

Sainisaab Ji 5 years, 2 months ago

What is meaning of this

0Thank You

Khushi K. 5 years, 2 months ago

How I know what you want to ask

0Thank You

Khushi K. 5 years, 2 months ago

Please ask full questions

0Thank You

ANSWER

Some suggestions made to reform political parties

Posted by Shivani Kumari 5 years, 2 months ago

CBSE > Class 10 > Social Science

0 answers

ANSWER

write a letter as Lencho to your froend amd tell him/her about the destruction of your crops, about the letter you wrote to god and also about the reply with the money that you recieved.Sxpress your irritation about the post office employees also

Posted by Janhavi Singh 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

0 answers

ANSWER

Proposalchapter summary...?

Posted by Teresa Singh ✌🏻 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Sumesh ☺️☺️☺️ 5 years, 2 months ago

Good night ?????

1Thank You

Sumesh ☺️☺️☺️ 5 years, 2 months ago

Hlo , ☺️☺️ are app extra class se dekh lo na vedio easy to understand ☺️

1Thank You

Teresa Singh ✌🏻 5 years, 2 months ago

Thank u so much Jagrati & Raju!!?

1Thank You

Jagrati Sharma 5 years, 2 months ago

Summary in points: ✴Lomov is received in Chubukov’s house ✴Lomov tells him the purpose of his visit ✴Chubukov consents ✴Lomov thinks of Natalya as his own life ✴Natalya and Lomov together talk ✴Lomov starts talking of his land ✴Lomov explains the ownership ✴Argument continues ✴Shouting starts ✴Chubukov sides with Natalya ✴Abuses exchanged ✴Accusation exchanged ✴Chubukov tells the purpose behind Lomov’s visit ✴Fighting over dogs ✴Fighting continues ✴Personal accusation ✴Lomov becomes unconscious ✴Chubukov gives her daughter’s hand to Lomov.......

1Thank You

Raju Salve 5 years, 2 months ago

The Proposal is a one-act play that begins with a young man, Lomov presenting a marriage proposal to his neighbour's daughter. ... In the midst of all this, proposal gets forgotten until Lomov falls off due to his palpitations and Chubukov instantly puts her daughter's hands in Lomov's.

3Thank You

ANSWER

What do you mean by the word ethnic ?

Posted by Navjot Kaur 5 years, 2 months ago

CBSE > Class 10 > Social Science

5 answers

Aanya Jain 5 years, 2 months ago

Ethnic means a cultural composition of a country

0Thank You

Bharti Bharadwaj 5 years, 2 months ago

Ethnic means relating to different racial and cultural group of people.

0Thank You

Ayush Kumar 5 years, 2 months ago

Hii

2Thank You

Aashish Chauhan 5 years, 2 months ago

A belief that regional, casts,.etc Social division between social group

2Thank You

Navjot Kaur 5 years, 2 months ago

A social division based on shared culture . People belonging to the same ethnic group believe in their common descent because of similarities of physical type or of culture or both.

5Thank You

ANSWER

Complete the following table Year. Events 1789. Unification of Italy 1859-70. ? 1859. ?

Posted by Navjot Kaur 5 years, 2 months ago

CBSE > Class 10 > Social Science

1 answers

Aanya Jain 5 years, 2 months ago

I 1859-70: Unification of Germany 1859: French Revolution occurred

0Thank You

ANSWER

Allen practice paper for NTSE

Posted by Hitesh Yadav 5 years, 2 months ago

CBSE > Class 10 > NTSE Scholarship

0 answers

ANSWER

Ethnic problems of Sri Lanka

Posted by Sweety ... 5 years, 2 months ago

CBSE > Class 10 > Social Science

1 answers

Aanya Jain 5 years, 2 months ago

Ethnic problems of Sri Lanka was Sinhala was given a great importance. •An act was passed in 1956 which recognised Sinhala as an official language. •Government followed preferential policies to favour Sinhalese. • Sri Lankan Tamils feels alienated . •They felt their language and needs were disregarded. •So, they formed parties and struggled for recognition of Tamil as an official language. • their demands were repeatedly denied. •In 1980s , several political parties were formed demanding a seperate Tamil ealem . • The distrust between the two soon turned into a widespread conflict which led a civil war.

0Thank You

ANSWER

Cards mark between the number 2 to 101 are placed in a box and mixed thoroughly one card is drawn from this box find the probability that the number on the card is first on number less than 10 a number which is a perfect square

Posted by Punit Patil 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

कबीर दास जी का जन्म

Posted by सम्राट जसवंत मौर्य 5 years, 2 months ago

CBSE > Class 10 > हिंदी ब

3 answers

Bhoomika Verma 5 years, 2 months ago

1398

0Thank You

Zakir Mohammad 5 years, 2 months ago

कबीर दास जी का जन्म 1398 में हुआ है और मृत्यु 1518 में हुआ है। गुरु रामानंद के शिष्य ने 120 आयु पाई थी

2Thank You

Kaushiki😀 Sharma 5 years, 2 months ago

1398

2Thank You

ANSWER

What is difference between formatting and editing in word

Posted by Kishlay Kanaujia 5 years, 2 months ago

CBSE > Class 10 > Information Technology (402)

1 answers

Khushi K. 5 years, 2 months ago

Editing means modifying like spell check/grammar,etc Whereas formatting refers to change appearence of text,page, documents etc

0Thank You

ANSWER

What is difference between formatting and editing

Posted by Kishlay Kanaujia 5 years, 2 months ago

CBSE > Class 10 > Information Technology (402)

1 answers

Sia ? 4 years, 11 months ago

Editing refers to making quick modification to a document using editing tools such as find and replace spelling and grammar checkers,copy and paste or undo redo features. Formatting refers to changing the appearance of text in a document such as text formatting or page formatting or paragraph formatting.

0Thank You

ANSWER

What is partisanship and partisan

Posted by Mohan Mohan 5 years, 2 months ago

CBSE > Class 10 > Social Science

2 answers

Archana Nair 5 years, 2 months ago

Partisanship is a tendency to take a side and support that side. It may be a group , party or a faction. A partisan is a person who is strongly commited to a party . He will have an inability to take a balanced view on an opinion.

0Thank You

Saniya Rawat 5 years, 2 months ago

Partition mean that up person is strongly belong to the party or group and fiction

0Thank You

ANSWER

1/2a+b+2x = 1/2a +1/b +1/2x find the roots

Posted by Charvi Sangwan 5 years, 2 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

iii. List any one characteristic of Bholi’s teacher with reference to her first day at school. Give a reason for your answer

Posted by Krish Pandey 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

2 answers

Ruchira Soni 5 years, 2 months ago

She Was Kind Hearted And Wanted To Be Confident while speaking her name and her behaviour towards bholi is very nice And With her politeness she make bholi to come at school daily .

0Thank You

Shikha Jha 5 years, 2 months ago

Bholi's teacher was kind hearted and helpful lady As she encouraged bholi to speak her name on her first day

0Thank You

ANSWER

What message does the poem fire and ice convey to us ?

Posted by Khushi - 5 years, 2 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Night Stead Gamer 4 years, 11 months ago

please give me answer

0Thank You

ANSWER

Write ways to create template in MS Word

Posted by Tanya M 5 years, 2 months ago

CBSE > Class 10 > Information Technology (402)

1 answers

Abhinav Vats 5 years, 2 months ago

To create template in MS Word follow these steps: (i) click on new option in File Tab. By default Blank Document option is selected. (ii) Click on Create Button present on the extreme right task pane. (iii) A new document will open. Make the desired changes in the page layout, like margin settings, orientation, styles, etc. You can also specify the header and footer, like page number, date/time, etc. (iv) After specifying all the required settings, click on the Save As option in the file tab. (v) Click on Save Button.

1Thank You

ANSWER

Name the metal which has very low melting point and can melt with heat of your palm?

Posted by Noyel K K 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Shikha Jha 5 years, 2 months ago

Cesium and gallium

0Thank You

Khushi - 5 years, 2 months ago

Gallium and cesium

0Thank You

Shubham Chaudhary 5 years, 2 months ago

Gallium and cesium

0Thank You

Chandresh Tiwari 5 years, 2 months ago

Gallium and Mercury (Hg).

0Thank You

Misty Chan 5 years, 2 months ago

Sodium and potassium are the two blahh blahh

0Thank You

ANSWER

An element 'X' with atomic number 11 forms a compound with element 'Y' with atomic number 8 .The formula of the compound formed is?

Posted by Noyel K K 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Ambika Kumari 5 years, 2 months ago

X is Sodium (Na) Y is Oxygen (O2) Compound is Na2O

0Thank You

Misty Chan 5 years, 2 months ago

Element X is sodium (Na) and element Y is oxygen (O) Therefore formula will be Na2O Sodium oxide (Na2O) Hope u find the answer right and if it is right then welcome as well thank u

0Thank You

Chandresh Tiwari 5 years, 2 months ago

Formula will be X2Y

0Thank You

ANSWER