Question

A piece of wire 78cm. long is given a shape of an isosceles triangle.Tha ratio one equal side to the base 5:3 . the length of base in cm.

Answer 1

As we Know
Isosceles triangle have 2 equal sides

Given equal sides to Base Ratio=5:3
There will be 2 sides and 1 base So Ratio=5:5:3

Let Ratio=5x,5x and 3x
Wire length=78cm
A/Q
5x+5x+3x=78
13x=78
x=78/13
x=6

Base=3x=3×6=18 cm
Base=18 cm