Question

The base of an isosceles triangle is 7 cm longer than the legs. Find the legs if the perimeter of the triangle is 43 cm

Answer 1

Answer: 12 cm

Explanation:

Answer 2

Answer: 12 cm

Explanation:

Let x be the leg of the given isosceles triangle.

Then, the base of isosceles triangle = x+7

Consider the perimeter of the isosceles triangle, we get

`x+x+x+7=43\\\\\Rightarrow\ 3x+7=43\\\\\Rightarrpw\ 3x=43-7\\\\\Rightarrow\ 3x=36\\\\\Rightarrow\ x=12`

Hence, the legs of the given isosceles triangle = 12 cm.