Question

Find the area of sector who radius is 7cm with the given angle 72

Answer 1

SOLUTION:-

Given:

•Radius= 7cm

•Angle = 72°

To find:

The area of the sector.

Explanation:

We know that, formula of the area of the sector;

$= > \frac{ \theta}{360 \degree} (\pi {r}^{2} )$

So,

$= > \frac{72 \degree}{360 \degree} \times \frac{22}{7} \times 7 \times 7 \\ \\ = > \frac{1}{5} \times 22 \times 7 \\ \\ = > \frac{154}{5} {cm}^{2} \\ \\ = > 30.8 {cm}^{2}$

Thus,

The area of the sector is 30.8cm².

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