Question

In an isosceles triangle,there are two sides,called legs,that are the same length.The Third Side Is Called The base if an isosceles triangle has perimeter 345 cm and bass length 85 cm what is the length of each leg

Answer 1

Each leg would be 166cm. 

Answer 2

The answer is 130 cm.

Explanation:

In order to determine the length of each side of the triangle, we have to know that it is an isosceles triangle.

The isosceles triangle has two sides which are the same length and one side that is different to the others.

Also, the perimeter of any triangle is the addition of its sides.

I have attached an image that shows an isosceles triangle.

So,

L=length of "leg" sides

B=length of "base" side

P=perimeter of the isosceles triangle

`P=2*L+B\\P=345\\B=85\\345=2*L+85\\2*L=345-85\\2*L=260\\L=130`

Finally, the length of each leg is 130 cm.