Question

A piece of wire in the form of a square of side 5.5 cm is cut and moulded in the form of a circle. Find the radius of the circle so form

Answer 1

Firstly,Perimeter of square=4×s
4×5.5=22cm
According to the question perimeter of square and circle are equal
So,Perimeter (Circumference)of circle=2Πr
22cm=2×22/7×r
r=22×7/44
r=3.5cm