Area of semicircle whose radius is 7cm is A.77 cm² B. 154 cm² C.38.5 cm² D. None of these
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Step-by-step explanation:
area of semicircle = 1/2( πr2)
= 1/2(22/7 x 7 x 7)
= 1/2 x 22/7 x 7 x 7
= 11/7 x 7 x 7
= 11 x 7
= 77
A. = 77
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