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An isosceles triangle has a perimeter 30cm and each of the equal sides is 12 cm. Find the area of the triangle

Posted by Gyan Chaudhary 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 11 months ago

Let The Third Side Be xcm.

Now Perimeter = 12+12+x

24+x = 30

x = 6

Now Find The Area Using Herons Formula

Semiperimeter = 30/2 = 15

{tex}Sq Root(15(15-12)(15-12)(15-6) ) = Sq Root(15*3*3*9) = Sq Root(1215) = 34.85 cm^2{/tex}

So Area is {tex}34.85cm^2{/tex}

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3(a^4b^3)^10×5(a^2b^2)^3 simplify

Posted by Rasmita Panigrahy 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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2^1/2 × 3^1/3 × 4^1/4 3^4/3 × 5^-7/5 ____________________ ÷. ________________. =10 10^-1/5 × 5^3/5. 4^-3/5 × 6

Posted by Ayushi Jaiswal 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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x3 - x2- (2+root 2) x+root 2

Posted by Shanya Saini 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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Parimay aparimay

Posted by Deepaksharma Deepaksharma 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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t6+3t2 +10 divide by t3 +1

Posted by Shanya Saini 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Meenal Khandelwal 4 years, 11 months ago

Remainder is 6

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If E,F,G,H are the mid point of sides of parllelogram.show that ar(EFGH)=1÷2 ar(ABCD).

Posted by Sukhman Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Meenal Khandelwal 4 years, 11 months ago

Const. Draw line he, ef, fg and gh Draw the line hf parallel to ab and de Such that ab is parallel to hf is parallel to de So abfh and defh are the parallelograms Now in parallelogram abfh Trialngle efh and parallelogram abfh are on the same base and between the same parallels. So triangle efh is 1/2 of parallelogram abfh (by mid point theo.)........~1 Similarly, area of triangle gfh= 1/2 area parallelogram edhf (mid point theo.)........~2 Now adding eqn.1 and 2 we get, Area ofParallelogram efgh=1/2 area of parallelogram abcd

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Evaluate by using identities-95×96

Posted by Samarth Mittal 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Marvel Legends 4 years, 11 months ago

(90+5)(90+6) =90^2+(5+6)90+5×6 =8100+11×90+30 =8100+990+30 =9120

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How to find the height of a frustum when the height of the cone and both the radius are given?

Posted by Niladri Sarkar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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√3+√2

Posted by Dnyaneshwar Gutte 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Meenal Khandelwal 4 years, 11 months ago

It is an irrational no.

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Three rational between-5/6and3/8

Posted by Sudhansu Badatya 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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एक चींटी एक मिनट में 6 मीटर तक चढ़ती है तथा उसके अगले एक मिनट में 3 मीटर चढ़ती है तो बताएं चींटी को 60 मीटर खंभे पर चढ़ने के लिए कितना समय लगेगा ??

Posted by Amit Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Ajay Singh 4 years, 11 months ago

37 minutes

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Find the decimal expansion of 1/7 ?????!!!!!

Posted by Angel Gautam Av 2124 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 11 months ago

1/7 = 0.142857

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State whether the following statements are true or false.give reasons for your answers. A. Every natural number is a whole number B.every integer is a whole number C.every rational number is a whole number. D.every real number is an irrational number.

Posted by Manwinder Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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Are the following statements true or false? Give reasons for your answers. a. Every whole number is a natural number. B.every integer is a rational number. C.every rational number is an integer. D.every irrational number is a real number

Posted by Manwinder Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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1. Find the area of the triangle ABC with A (1,- 4) and mid-points of sides through A being (2, -1) and (0, -1).

Posted by Nidhish Konnoju 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How to find rational number between 2/3

Posted by Garima Kajla 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is first term syllabus of math

Posted by Minakshi Mishra 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Md. Rehan 4 years, 11 months ago

What , You don't know

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Y³+y²+2y+3/y+2

Posted by Subhalaxmi Sahu 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Rahul Jain 4 years, 11 months ago

Lol

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What is irrational numbers ?give some examples

Posted by Vandana Kashyap 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Subhalaxmi Sahu 4 years, 11 months ago

Example √1,√2,π

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Subhalaxmi Sahu 4 years, 11 months ago

Any number which can not be written p/q form. Where p and q are integers and q not=0 example >

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Represent under root 2 by 3 on the number line

Posted by Abhishek Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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Find the product using appropriate algebraic identities. a^2/b^2+2+b^2/a^2

Posted by Pranshul Thakur 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Stuti Lal 4 years, 11 months ago

(a+b)^2 = a^2+2ab+b^2 (a^2÷b^2)+2 +(b^2÷a^2)

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Compare the volume of cube with side 12 cm and cubiod with length breadth and height ,11,12,13 respectively

Posted by Jagsirsingj Maan 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Stuti Lal 4 years, 11 months ago

12×12×12:11×12×13 = 1728:1716 =1728/1716

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How to represent √6 on number line

Posted by Chinmay Jain 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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Classify following are rational or irrational .give reason, 1. 3+√3 2. √7-2 3. 2/3√6

Posted by Sneha Anand 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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In which quadrant does (0,-2) lie ?

Posted by Sankavi Sankaran 4 years, 11 months ago

CBSE > Class 09 > Mathematics

7 answers

Diksha? 4 years, 11 months ago

In y axis

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Stuti Lal 4 years, 11 months ago

4th quadrant

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Saurabh Gupta 4 years, 11 months ago

1qu

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Akshit Chauhan 4 years, 11 months ago

3rd quadrant

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Remix Jatt 4 years, 11 months ago

3rd quadrant

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Ulmani Devi 4 years, 11 months ago

What is irrational number

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Adarsh Singh 4 years, 11 months ago

(0,-2) lie in 3rd quadrant.

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What is a rational number?

Posted by Tenzin Chime 4 years, 11 months ago

CBSE > Class 09 > Mathematics

4 answers

Yagyesh Rai 4 years, 11 months ago

Numbers which are in the form of p/q and q is not equal to zero is called a rational numbers

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Adarsh Singh 4 years, 11 months ago

Rational Number is a number that can be written in form of p/q where q is not equal to 0.

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Yogita Ingle 4 years, 11 months ago

A rational number, in Mathematics, can be defined as any number which can be represented in the form of p/q where q is greater than 0. Also, we can say that any fraction fit under the category of rational numbers, where denominator and numerator are integers and the denominator is not equal to zero.

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Meenal Sinha 4 years, 11 months ago

The numbers of the form p/q, where p and q are integers and q is not equal to 0, are known as rational numbers.

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Find 10 rational number between -1/9 and 4/9

Posted by Arha Abhyarthana 4 years, 11 months ago

CBSE > Class 09 > Mathematics