Question

If the area of the sector of a circle of radius r os 100cm square and its perimeter 50cm ,find r

Answer 1

Answer:

Area of sector = @/360(πr²) = 100 --------(1)

perimeter of sector = @/360(2πr) = 50 -------(2)

Dividing both equations we get ,

(r/2) = 2/1

r = 4cm (Ans)

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