Question

Find the area of the sector interms of pi.24180°Area =

Answer 1

For this type of questions we use the formula os the area of a sector:

$AS=\text{ }\pi r^2\cdot\frac{\alpha}{360}$

Substituting we get

$AS=\pi(12)^2\frac{180}{360}=\pi(144)\frac{1}{2}=72\text{ }\pi$