Question

find the area of the sector. use 3.14 for π

Answer 1

$\begin{gathered} \text{Given }\angle=144^o\text{ and r=10} \\ A=\frac{\angle}{360}\cdot\pi.r \\ A=\frac{144^o}{360}\cdot\frac{22}{7}\cdot10 \\ A=\frac{88}{7} \\ A=12.57 \end{gathered}$

The Area A is 12.57