Question

The area of circle made by rotating a rope of length $176cm$ is

Answer 1

The length of rope acts as circumference of circle.

The circumference of circle is $2\pi r=176\frac{22}{7}r=88r=28cm$

The area of circle is $\pi r^2\frac{22}{7}\times 28\times 28=2,464c{m}^2$