find the area of a semi circle with radius of length is 2.1 cm ?
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Answer:
6.93 cm^2
Step-by-step explanation:
area of semi circle = ( πr^2)/2
= (22/7×2.1×2.1)/2
= (22×0.3×2.1)/2
= 13.86/2
= 6.93 cm^2
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