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6 April, 01:14

What is the surface area of a cylinder with base radius 4 and height 7? Either enter an exact answer in terms of / pi or use 3.14 for / piπpi and enter your answer as a decimal

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  1. 6 April, 03:26
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    The surface area is 88*pi square units.

    Step-by-step explanation:

    The surface area of a cylinder is given by two times the area of the base plus the area of the sides. This is given bellow:

    surface area = 2 * (base area) + (side area)

    base area = pi*r²

    base area = pi * (4) ²

    base area = pi*16 = 16*pi

    side area = 2*pi*r*h

    side area = 2*pi*4*7

    side area = 8*7*pi

    side area = 56*pi

    surface area = 2 * (16*pi) + 56*pi

    surface area = 32*pi + 56*pi

    surface area = 88*pi

    The surface area is 88*pi square units.
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