SOLUTION: what is the surface of sphere whose diameter is 20 foot

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Question 276860: what is the surface of sphere whose diameter is 20 foot
Answer by mananth(16946) About Me  (Show Source):
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what is the surface of sphere whose diameter is 20 foot
the surface area of a sphere is given by the formula 4*pi*r^2
4* 3.14*10 *10
= 1256 square feet