Question

4. A piece of wire is bent in
the shape of a square of side 11 cm. It is re-bent to form a circular ring.
What is the radius of the ring ?​

Answer 1

Side of a square=11cm

Therefore, perimeter=11cm X 4

=44cm

Now, it is rebent to form circular ring

so, circumference=2XpiXr

44=2X22/7Xr

44/2=22/7Xr

22X7=22Xr

154/22=R

R=7.