CBSE Board | Homework Help

In geometry, Heron's formula (sometimes called Hero's formula), named after Hero of Alexandria, gives the area of a triangle when the length of all three sides are known. Unlike other triangle area formulae, there is no need to calculate angles or other distances in the triangle first.

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surdas ke pad ki vyakhya , vyakhya no 6. explain

Posted by Vipin Kumar Gupta 4 years, 11 months ago (3375000)

CBSE > Class 11 > हिंदी कोर

0 answers

ANSWER

How to get new phone from parents

Posted by Divyanshu Jha 4 years, 11 months ago (10511757)

CBSE > Class 07 > Other Subjects

5 answers

. . 4 years, 11 months ago (8868308)

Request them

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Lakshya Garg 4 years, 11 months ago (9916866)

Parents se request karo

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Lakshya Garg 4 years, 11 months ago (9916866)

Phone ko thodo mat

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Anjali Yadav 4 years, 11 months ago (10450933)

Pahle vale phone ko tor do Apne app dusara ah jaenga

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Ayushman Dey 4 years, 11 months ago (926656)

Ask them

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Hcl

Posted by Sunil Avati 4 years, 11 months ago (10509846)

ICSE & ISC > Class 11 > Chemistry

1 answers

Raushan Singh 4 years, 4 months ago (11913718)

Hydrochloric acid

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Teacher Which is more important to us, the sun or the moon? Pupil The moon is more important than the sun, Teacher Why do you think so? Pupil The moon gives us light at night when we need it, but the sun gives us light only in the day time, when we don't need it The teacher asked the pupil (a) the sun or the moon, The pupil replied that (b) The teacher asked him (c) . The pupil replied (d) light at night when they needed it, but the sun gives us light only in the day time, when we don't need

Posted by Atiksh Bhatia 4 years, 11 months ago (7127115)

CBSE > Class 10 > English Language and Literature

0 answers

ANSWER

What is the summary of poem ON KILLING A TREE

Posted by Vishwas Prabhu 4 years, 11 months ago (10351711)

CBSE > Class 09 > English Lang & Lit. (184)

3 answers

Stiya Sabu 4 years, 11 months ago (9052075)

On killing a tree poem is telling that don't cut down the trees.if we are cutting down the tree it should be full plucked

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Nitya Gupta 4 years, 11 months ago (9253892)

On Killing a Tree” is a scathing criticism of human callousness and cruelty in chopping down trees for agriculture, urbanization and industrialization. Apparently, the poem reads like a ‘How-to-Do’ manual of killing a tree but actually, it is a passionate appeal not to cut trees. The poem also applauds the sturdiness and resilience of trees in that they take all kinds of attacks and wounds in their stride but refuse to die. They may be wounded, scarred or maimed, but they bounce back into life by healing themselves in due course of time. One wonders if human beings can ever have that kind of attitude to life.

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Vishwas Prabhu 4 years, 11 months ago (10351711)

"On Killing a Tree” is a sensitive poem. The poet persuades the reader not to destroy trees and equates it with “killing” a human being. He says that a plant takes sunlight, water, air and nutrients from the soil to gradually become a huge tree. It develops a strong trunk and gets numerous leaves.

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Mr. Bhavani Parshad bought certain number of note books from Rs.200. Five of these are stolen. He sold the rest of the books for Rs.4 more than he paid for each and made a profit of Rs.40. How many books did he buy?

Posted by Yogita Mohanta 4 years, 11 months ago (8911757)

CBSE > Class 10 > Mathematics

1 answers

Archita Goyal 4 years, 11 months ago (10585059)

No of books stolen = 5 Let the books sold by him = x Profit made by him by seeling x books = 40 Profit made on each note book = Rs 4 So, x×4 = 40 x= 40/4 x = 10 Therefore number of books bought by him = 10+5 =15

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Urdu corce A

Posted by Md Faisal 4 years, 11 months ago (8994456)

CBSE > Class 10 > Regional Language

0 answers

ANSWER

San

Posted by Poonam Devi 4 years, 11 months ago (10570008)

CBSE > Class 03 > Other Subjects

4 answers

Ayan Ravindra Vaidya 4 years, 10 months ago (10669713)

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Saba Khan 4 years, 11 months ago (10689320)

Meaning of hay

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V Revanth 4 years, 11 months ago (9657894)

To make

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Delisha Patil 4 years, 11 months ago (10571876)

Is tomorrow is class

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Imagine you are living in the late eighteenth and early nineteenth century. Write down your input in detail regarding the British conquest during this time.

Posted by Maroof Imtiyaz_10Thc_ 4070 4 years, 11 months ago (9986170)

CBSE > Class 10 > Social Science

0 answers

ANSWER

Dual nature of matter and light

Posted by Krishana Kumar 4 years, 11 months ago (10570387)

CBSE > Class 11 > Chemistry

1 answers

Saloni Saloni Pandey 4 years, 11 months ago (10570247)

Element

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Identify the MSB and LSB in the number 254

Posted by Vidya Kadam 4 years, 11 months ago (8994373)

CBSE > Class 07 > Computer

0 answers

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(1-1/x²)dx differentiate it

Posted by Prince Raj 4 years, 11 months ago (7789461)

CBSE > Class 12 > Mathematics

4 answers

Twinkle . 4 years, 11 months ago (8895364)

2/x³

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Gurharman Kaur 4 years, 11 months ago (10322509)

-2/x^3

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Gourav Chhapola 4 years, 11 months ago (10575374)

x+1/x

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Mansi Maheshwari 4 years, 11 months ago (10295386)

2/x3

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Sabhi neta parbandakh nhi hote explain

Posted by Mohd Azhar 4 years, 11 months ago (10565267)

CBSE > Class 12 > व्यवसाय अध्ययन

0 answers

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What is a mouse

Posted by Aarushi Patil 4 years, 11 months ago (5490259)

CBSE > Class 05 > Computer

1 answers

Sia ? 4 years, 7 months ago (6945213)

A computer mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display, which allows a smooth control of the graphical user interface of a computer.

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Social groups

Posted by Řûmãň Ķháņ 4 years, 11 months ago (10569804)

CBSE > Class 10 > Social Science

0 answers

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पाठशाला न जाने के कारण अध्यापक और छात्र के बीच संवाद लेखन

Posted by Shweta Nalawade 4 years, 11 months ago (9343396)

CBSE > Class 08 > हिंदी

0 answers

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mobile par online class lete samay hone Wali asuvidha ke bare mein charcha karte hue do chhatra bechki samvaada ? It should be so long

Posted by Shweta Nalawade 4 years, 11 months ago (9343396)

CBSE > Class 08 > हिंदी

1 answers

Shubham Verma 4 years, 11 months ago (9731540)

Bas sir ko bolo altb 4 dabaye sir computer ke hue toh vho hi bata denge aur nhi toh ap samjh le naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAAAAAAAAAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa( inta long thik hai) aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

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What do you understand by any mission how it is helpful in a presentation

Posted by Vinay Kumar 4 years, 11 months ago (10540167)

CBSE > Class 06 > Computer

0 answers

ANSWER

Theorem 6.5 and 6.6

Posted by Ujjwal Tiwari 4 years, 11 months ago (10283092)

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Bidndidnddibfinksn

Posted by Vipin Kohli 4 years, 11 months ago (10569795)

ICSE & ISC > Class 07 > English

1 answers

Gadha Reddy 4 years, 6 months ago (11532049)

A+B hole square

0 Thank You

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Some things dissolve in the water while some

Posted by Amrapali Kamble 4 years, 11 months ago (8916861)

CBSE > Class 05 > EVS

0 answers

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Speech on Egotism is a fault of mankind

Posted by Miti Jain 4 years, 11 months ago (8172932)

CBSE > Class 10 > English Language and Literature

0 answers

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A pen stand made of wood is in the shape of a cuboid depressions to hold pens the dimensions of the cuboid are 15cm by 10cm by 3.5cm. the radius of each of the depressions is 0.5cm and the depth is 1.4cm. find the volume of wood in the entire stand

Posted by Bhavneet Nema 4 years, 11 months ago (10519324)

CBSE > Class 10 > Mathematics

2 answers

Prity Lakra 4 years, 11 months ago (10179917)

Volume of wood=volume of cuboidical part - volume of conical part = l×b×h - ⅓ pie r²h = (15×10×3.5 ) - ( ⅓×22/7 ×0.5×0.5×1.4) = 525 cm³ - 1.46 cm³ =523.54 cm³

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Ravi Chauhan 4 years, 11 months ago (9471672)

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Unit 10 Exercise 10.2 solved

Posted by Tanuj Sharma 4 years, 11 months ago (9867806)

CBSE > Class 09 > Mathematics

2 answers

Snehasish Mohanty 4 years, 11 months ago (3481294)

1. Recall that two circles are congruent if they have the same radii. Prove that equal chords of congruent circles subtend equal angles at their centres. Solution: To recall, a circle is a collection of points whose every point is equidistant from its centre. So, two circles can be congruent only when the distance of every point of both the circles are equal from the centre. Ncert solutions class 9 chapter 10-1 For the second part of the question, it is given that AB = CD i.e. two equal chords. Now, it is to be proven that angle AOB is equal to angle COD. Proof: Consider the triangles ΔAOB and ΔCOD, OA = OC and OB = OD (Since they are the radii of the circle) AB = CD (As given in the question) So, by SSS congruency, ΔAOB ΔCOD ∴ By CPCT we have, AOB = COD. (Hence proved). 2. Prove that if chords of congruent circles subtend equal angles at their centres, then the chords are equal. Solution: Consider the following diagram- Ncert solutions class 9 chapter 10-2 Here, it is given that AOB = COD i.e. they are equal angles. Now, we will have to prove that the line segments AB and CD are equal i.e. AB = CD. Proof: In triangles AOB and COD, AOB = COD (as given in the question) OA = OC and OB = OD (these are the radii of the circle) So, by SAS congruency, ΔAOB ΔCOD. ∴ By the rule of CPCT, we have AB = CD. (Hence proved)

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Shreekanth Cm 4 years, 11 months ago (10311952)

Woooooowwwwww

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Explain the process of manufacturing of steel . Choose the correct option : (1). Pig iron (2). Blast furnace (3). Sharping metal (4). Steel making Options are..... (a). 2,1,4,3 (b). 3,1,4,2 (c). 1,4,2,3 (d). 2,3,4,1

Posted by Avani Singh 4 years, 11 months ago (9974036)

CBSE > Class 10 > Social Science