The lengths of the legs of a right triangle are 15 cm and 20 cm. What is the perimeter of the triangle?

Question

anonymous · Answer

|dw:1334185736579:dw|

anonymous · Answer

You have to find the hypotenuse by usig the equation $$a ^{2}+b ^{2}= c ^{2}$$   and a and b are your legs

anonymous · Answer

How do you find 3rd side?

anonymous · Answer

Once you do, you can add the three sides to get perimeter.

anonymous · Answer

No....!

anonymous · Answer

see thats what i got, but thats not one of the answers

anonymous · Answer

225+81 = ?
Square root of that number is the 3rd side.

anonymous · Answer

square root of 306=?

anonymous · Answer

Yeah....

anonymous · Answer

Calculator can come in handy.

anonymous · Answer

thats not one of the answers either..

anonymous · Answer

BTW - It is not 81. The second leg is 20. So, its square is 400.

anonymous · Answer

400 + 225 = 625
SQRT(625) = 25

anonymous · Answer

Once you have the 3rd side, like I said, add all three sides' lengths to get the perimeter.

anonymous · Answer

that is one of the answers, thank you!

anonymous · Answer

No, just because 25 is one of the choices does not make it the right answer.

The perimeter is the "sum of all three sides". So, it is 15 + 20 + 25.