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Your sphere will have a surface area of about 201 square feet. The formula for finding the surface area (As) of a sphere is 4 times pi times the radius (r) squared, or this: As = 4 x pi x r2 That's As = 4 x 3.14 x 42 = 201.0619298 square feet. A link can be found for more information.

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Q: What is the surface area of a sphere with radius 4 feet?
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