Question 199331
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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