Question

Find the area of sector of right angle cut off from a circle of diameter 12 cm.​

Answer 1

Answer:

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• Plz refer to above diagram ( in attachment )

Given :

• Diameter of circle = 12 cm

And

$radius = \frac{d}{2}$

Therefore radius = 6 cm

Let's first find the area of the full circle

Area of circle =

$\pi {r}^{2}$

$area = 3.14 \times 6 \times 6$

$= 113.04 \: {cm}^{2}$

Angle of sector = 90°

$\boxed {area \: of \: sector = \frac{angle \: of \: sector}{360} \times area \: of \: circle}$

$area = \frac{1}{4} \times 113.04$

$\boxed{area = 28.26 \: {cm}^{2} }$

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Hope it helps

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