Question

In an isosceles triangle, one of the equal sides is 4/5th of the unequal side. Find the length of the unequal side, if the perimeter of the triangle is 91 cm.​

Answer 1

Answer:

length of unequal side is 35 cm

Step-by-step explanation:

let the equal side is X

and unequal side is Y

then acc to que. X=4/5Y

now given that perimeter of triangle is 91cm

so. X+X+Y= 91

on solving this and substituting X =5/4Y

then we get.

2(4/5)Y+Y=91

13Y/5=91

Y = 35cm

acc to eq 1

X is 28 cm