A sector of 120, cut out from a circle, h… | Answer | TuitionWave

Subject

Quantitative Aptitude

Topic

Areas & Volumes

A sector of 120, cut out from a circle, has an area of $\frac{66}7cm^2$ Find the radius of the circle ?
Reading

ক)

1

খ)

2

গ)

3

ঘ)

4

Explanation

Let the radius of the circle be r cm. Then,

\frac{120}{360}\mathrm{πr}^2=\frac{66}7

r^2=\frac{66}7\ast\frac7{22}\ast3

r=3.

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