Question

Find the radius of a semicircle whose area is 693 cm.
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Answer 1

Answer:

πr2/2 = 693

πr2= 2×693

πr2 = 1386

r2 = 1386× 7 ÷ 22

r2 =. 63× 7

r = √441

r= 21 cm

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Answer 2

here is your answer

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