\"\"

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Given that height(h) of cylinder = 6 ft.

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Radius(r) of cylinder = 4 ft.

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Surface area(T):

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\"\"                       (Surface area of cylinder)

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\"\"          (Substitute \"\")\"\"

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\"\"          (Evalute powers)

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\"\"                        (Multiply)

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\"\"                                   (Add: \"\")

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\"\"                           (Substitute \"\")

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

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The surface area is approximately 251.2 square feet.