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27 November, 07:41

A right cylinder has a radiose of 3 and a heighth of 12. What is the surface area?

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  1. 27 November, 11:22
    0
    282.6

    Step-by-step explanation:

    Surface area of a cylinder

    = 2pi rh + 2pi r^2

    Given radius = 3

    Height h = 12

    Pi = 3.14

    Surface area = 2 x 3.14 x 3 x 12 + 2 x 3.14 x (3) ^2

    2 x 3.14 x 3 x12

    +

    2 x 3.14 x 3 x 3

    Simplify each sides

    226.08 + 56.52

    282.6
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