SOLUTION: find the surface area of a sphere with a radius of 20 feet

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Question 303878: find the surface area of a sphere with a radius of 20 feet
Answer by london maths tutor(243) About Me  (Show Source):
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The surface area of a sphere = 4%2Api%2Ar%5E2 where r is radius
Surface area = 4%2Api%2A%2820%5E2%29
= 5026.5 ft^2