Question

the perimeter of isosceles triangle is 216 cm . One of the side is 66 cm .Find
the two eqal side

Answer 1

In an isosceles triangle two sides are equal..

Perimeter = 216cm

one side = 66cm
two equal sides = 216/2 = 108cm

Answer 2

Let ∆ABC is isosceles triangles
let Side be x
Two sides =2x. ........ (two sides are equal)
Perimeter of = Sum of all its sides
isosceles ∆
216 = 2x + 66
2x = 216-66
2x. = 150
x. = 75
Measure of two equal sides is 75cm