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Question

The area of the sector of a circle of radius 10.5 cm is 69.3cm^2. Find the central angle of the sector.

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Solution

Area of sector = theta / 360 * pie * r * r

theta / 360 * (22 / 7) * (21 / 2) * (21 / 2) = 69.3

theta = 72

Ans: 72 degree


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