Question

If the area of a circle is 2826 sq.cm, find its radius

Answer 1

$\text{given - }$

Area of a circle is 2826 cm²

$\text{to \: find - }$

Radius

$\text{now}$
$\text{area \: of \: circle } = \pi \: {r}^{2} \\ \\ = > 2826 = \pi \: {r}^{2} \\ \\ = > 2826 = \frac{22}{7} {r}^{2} \\ \\ = > {r}^{2} = 2826 \times \frac{7}{22 } \\ \\ = > {r}^{2} = \frac{19782}{22} \\ \\ = > {r}^{2} = 899.18 \\ \\ = > r = \sqrt{899.18 } \\ \\ = > r = 29.98$