circle area is easy.

Area of a circle $= r \times r \times \pi = (\frac{7}{\sqrt\pi})^{2} \times \pi = \frac{49}{x} \times \pi = 49(cm^{2})$

The area of a circle or radius $r$ is $\pi r^2$ . Substituting the value of $r$ in the formula, we get $\pi \left(\dfrac{7}{\sqrt{\pi}}\right)^2=$ $\color{#D61F06}\large \boxed{49}$ $\large \boxed{answer}$

area of a circle = pi.r.^2 = pi * (7/rootpi)^2 =pi * 49/pi =49