\"\"

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From the lab, we find that the surface area of a sphere is four times the area of the

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great circle.

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Surface area:

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\"\"                                (Surface area of a sphere)

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\"\"                        (Substitute \"\")

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\"\"                     (Evaluate powers)

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\"\"                        (Multiply: \"\")

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\"\"                (Substitute \"\")

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\"\"                              (Multiply: \"\")\"\"

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The surface area is approximately 580.7 square inches.