Question

If the radius of a circle is $\frac{7}{\sqrt{\pi }}$ cm,then the area of the circle is

• A. $154c{m}^2$
• B. $\frac{49}{\pi }$ $c{m}^2$
• C. $22c{m}^2$
• D. $49c{m}^2$

Answer 1

The correct option is D $49c{m}^2$

Given : radius of the circle $=\frac{7}{\sqrt{\pi }}$

Area of the circle $=\pi r^2$

$=\pi (\frac{7}{\sqrt{\pi }}{)}^2$

$=\pi \times \frac{49}{\pi }=49c{m}^2$