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17 October, 02:33

What is the surface area of a cylinder with base radius 2 and height 9? Either enter an exact answer in terms of / pi or use 3.14, / piπpi and enter your answer as a decimal.

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  1. 17 October, 06:12
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    44π

    Step-by-step explanation:

    The surface area of a cylinder is given by the formula ...

    S = 2πr² + 2πrh = 2πr (r+h)

    For the given dimensions, the area is ...

    S = 2π (2) (2 + 9) = 44π

    The surface area is 44π square units.
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