Question

A wire was bent in the shape of a circle with radius 7cm. If the same wire was again used to make a square, then find its side.

Answer 1

Given radius of the circle r = 7 cm

Circumference of the circle C = 2πr = 2 x \(\frac{22}{7}\) x 7 = 44 cm 

Given length of the wire same. 

So, perimeter of square = circumference of the circle 

4 x side = 44 cm 

Divide with 4 on both sides = 

\(\frac{4\times side}{4}= \frac{44}{4}\)

Side = 11 cm 

∴ Side of square = 11cm.