Question

A triangular wire whose perimeter is 28.26cm is bent into a circle. Find the diameter of the circle

Answer 1

when we deform the triangle into wire then its length remain same
so,
perimeter of triangle =circumference of the circle
28.26=2*3.14r
r=28.26/2*3.14=4.5cm

Answer 2

it's answer is 9 cm.