Question

Find the area of the following circle given that$:$ radius$=30cm$

Answer 1

It is given that radius of the circle is $30cm.$

Area of the circle with radius $r$ is $=\mathrm{\pi }\times {\mathrm{r}}^2$

$r=30cm$

Area of circle $=\frac{22}{7}\times {\left(30\right)}^2$

$=\frac{22\times 30\times 30}{7}$

$=3.1428\times 900$

$=2828.57c{m}^2$

Hence, the area of the circle is $2828.57c{m}^2$