You can
put this solution on YOUR website!Remember that Area = pi * rad^2
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we are given diameter = 42, or radius = 21 ,,,,(42/2)
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Area = pi * r^2 = pi * 21^2 = pi * 441 = 1385.44 inches ^2
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an obscure Area formula is A = pi d^2 /4 = pi 42^2 /4 = 1385.44 also
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