CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Given sides of the triangle are in ratio 42 : 34 :20 Semi perimeter - 42 + 34 +20 /2 = 96/2 =48 By heron 's formula = √ s ( s - a ) ( s - b) (s - c ) √ 48 (48 - 42 ) (48 - 34 ) ( 48 - 20 ) √ 48 ×6 ×14 × 28 √ 2×2×2×2×3×2×3×2×7×2×2×7 2×2×3×2×7×2 = 336 cm square

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Khushbu Tripathi 1 year, 11 months ago

336 cm square

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ANSWER

100+150

Posted by Vetrivel N.K 1 year, 11 months ago

CBSE > Class 09 > Mathematics

5 answers

Shreya Pandey 1 year, 11 months ago

250

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Account Deleted 1 year, 11 months ago

250

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Tushar Kumar 1 year, 11 months ago

100+50=250

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Vetrivel N.K 1 year, 11 months ago

38808÷1000

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Khushbu Tripathi 1 year, 11 months ago

250

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ANSWER

2√2=78

Posted by Aditya Patel 1 year, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 1 year, 11 months ago

√2=39

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Tushar Kumar 1 year, 11 months ago

√2=69

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Chapter -15 Probability?

Posted by S Varsha 1 year, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Prabhat Kumar 1 year, 11 months ago

It is very interesting chapter

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Ajay lives in delhi find value

Posted by Sareena Sareenausman 1 year, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Prabhat Kumar 1 year, 11 months ago

249 201

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Tushar Kumar 1 year, 11 months ago

2√2

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Aditya Patel 1 year, 11 months ago

2√2

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Ajay livesin jaipur

Posted by Sareena Sareenausman 1 year, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Aditya Patel 1 year, 11 months ago

Sgedi

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2 +2 =

Posted by Rohit Kumar Lodha 1 year, 11 months ago

CBSE > Class 09 > Mathematics

5 answers

Radhika Lohchab 1 year, 11 months ago

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Khushbu Tripathi 1 year, 11 months ago

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Meer Sayeed 1 year, 11 months ago

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S Varsha 1 year, 11 months ago

2 + 2 = 4

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Chakkra Dev 1 year, 11 months ago

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How to find area of rhombus

Posted by Het Vaddoriya 1 year, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 1 year, 11 months ago

One upon 2 X d1 into D2

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Shaurya Singhal 1 year, 11 months ago

It can be find by 1/2 xd¹xd²

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ANSWER

Ajay live in delhi the city of father in law's residence is at jaipur is 600km from Delhi......

Posted by Dark Gamer 1 year, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Avaneesh Korde 1 year, 11 months ago

ye sirf question hai

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Dark Gamer 1 year, 11 months ago

ajay lives in delhi the city of ajay's father in law residence is at jaipur is 600 km from delhi ajay's travel to 600 km partly by train and partly by car he used to buy cheap items from the delhi and sell at jaipur and also cheap items from jaipur and sells at delhi once from delhi ti to jaipur in forward journey he covered 2x km by train and rest y km by taxi but while returning he did not get a reservation form jaipur in the train so first 2y km he had to travel by taxi and the rest x km by train from delhi to jaipur he took 8 hours but in returning lit took 10 hours class 9th case based questions for class 9th maths chapter 4 Questions Find value of x and y In delhi to jaipur journey how much distance did he travel by train How much distance did he travel by taxi in both sides How much distance did he travel by train in both sides journey subject maths

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Ritik Ghusinga 1 year, 11 months ago

Yeh Kya hai

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ANSWER

The internal and external diameter of a hollow hemispherical vessel are 24cm and 25 cm respectively. The cost of paint 1sq.cm of surface is Rs1.75. Find the total cost to the nearest rupee to paint the vessel all over . Ignore the area of the edge

Posted by Alex Moon 1 year, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Side of a triangle are in the ratio of 12:17:25 and its perimeter is 540 cm. Find its area?

Posted by Bhavik . 1 year, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Bhoomika Reddy 1 year, 11 months ago

Given sides of the triangle are in ration 12:17:25 Perimeter=540cm a=12 𝒙 b=17 𝒙 c=25 𝒙 Perimeter=540 a+b+c=540 12𝒙 + 17𝒙 + 25𝒙 =540 54𝒙 =540 𝒙=540÷54 𝒙 = 10„, a=12𝒙=12×10=120 b=17𝒙=17×10=170 c=25𝒙=25×10=250 S=a+b+c 2 S=540 2 S=270„ By herons formula A=√s(s-a)(s-b)(s-c) =√270(270-120)(270-170) (270-250) =√(270×150×100×20 =√a×30×30×5×5×20×20 =√3²×30²×5²×20² =3×30×5×20 a=9000cm²

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Arjav Anand 1 year, 11 months ago

9000cm²

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ANSWER

What is √77.

Posted by Adarsh Yadav 1 year, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Congruency types

Posted by Aditya Pal 1 year, 11 months ago

CBSE > Class 09 > Mathematics

4 answers

Suprabha Barik 1 year, 10 months ago

1.SSS 2.RHS 3.ASA 4.SAS 5.AAS

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Abhijeet Shukla 1 year, 11 months ago

1.SSS 2.SAS 3.ASA 4.RHS

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Adarsh Yadav 1 year, 11 months ago

1.SSS. 2.SAS. 3 AAS.4. RHS..

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Adarsh Yadav 1 year, 11 months ago

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In a quadrilateral ABCD AC is equals to AD and ab bisects angle a show that triangle ABC is congruent to Triangle ABD

Posted by Aditya Pal 1 year, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

125.38÷8

Posted by Krishna Vimal 1 year, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Prabhat Kumar 1 year, 11 months ago

15. 6725

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If x+y=w+z,then prove that AOB is line

Posted by Rajat Yadav 1 year, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Prabhat Kumar 1 year, 11 months ago

X + y is equals to w + z X+ Y + w + said is equals to 360 X + y + X + y is equals to 360 2x + 2 y is equals to 360 X + y is equals to 360 upon 2 X + y is equals to 180 Hence aob is straight

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Khushbu Tripathi 1 year, 11 months ago

Given x+y = w+z To prove ; AOB is a line x+y+w+z = 360 ( reflex angle ) x+y = w+z w+z+ w+ z = 360 2w + 2z = 360 2(w+z) = 360 w+z = 360/2 = 180 Hence prove : AOB is a line

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ANSWER

Chapter 7 exercise 7.1 8 summ

Posted by Abhi Yadav 1 year, 11 months ago

CBSE > Class 09 > Mathematics