find the area of semicircle when its radius is 21 CM.
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Answered by
27
Answer:
693 cm²
Step-by-step explanation:
area of semicircle = 1/2(πr²)
radius = 21 cm
1/2(22/7) x 21²
= 11/7 x 21 x 21
= 11 x 21 x 3
= 63 x 11
= 693 cm²
hope this helps you dear..
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Answer:
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