Question

Please help! And explain.

Answer 1

A=25pi/8

Explanation:

Answer 2

`\bf \textit{area of a sector of a circle}\\\\ A=\cfrac{\theta r^2}{2}\qquad \begin{cases} \theta=\textit{angle in radians}\\ r=radius\\ ----------\\ r=5\\ \theta=(\pi )/(4) \end{cases}\implies A=\cfrac{(\pi )/(4)\cdot 5^2}{2}\\\\ -----------------------------\\\\ A=\cfrac{(\pi )/(4)\cdot 25}{2}\implies A=\cfrac{(25\pi )/(4)}{2}\implies A=\cfrac{(25\pi )/(4)}{(2)/(1)}\implies A=\cfrac{25\pi }{4}\cdot \cfrac{1}{2} \\\\\\ \boxed{A=\cfrac{25\pi }{8}}`