Question

A wire is in the form of a circle of radius 21 CM. it is bent into an equilateral triangle find the side of the triangle ​

Answer 1

First circumference of circle

Circumference of circle=2×22/7×21

=2×22×3

=2×66

=132cm

Circumference of circle = perimeter of triangle

perimeter of an equilateral triangle=3×side

132=3×side

132/3=side

side=44cm

therefore,the side of triangle is 44cm