Question

Find the area of a circle whose circumference is 44 cm44 cm in sq cm.

Answer 1

We know that the circumference of circle = $2\pi r$

Area of circle = $\pi r^2$

Circumference = $2\pi r$ = $44$

= $2$ x $\frac{22}{7}$ x $r$ = $44$

= $r$ = $\frac{7\times 44}{2\times 22}$

=$r$ = $7cm$

Therefore, area of circle = $\pi r^2$ = $\frac{22}{7}$ x $7$ x $7$

= $154c{m}^2$