5. A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume of 320pi cubic feet. What is the diameter

Question

5. A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume of 320pi cubic feet. What is the diameter, in feet, of the water tank? ​

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Thành Công 5 years 2021-07-25T13:28:48+00:00 1 Answers 29 views 0

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  1. diemkieu
    0
    2021-07-25T13:30:44+00:00
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    Answer:

    8 ft.

    Step-by-step explanation:

    V = Bh        B = area of the base           h = height

    The base is a circle, so B = \pi r^{2}

    320π = \pi r^{2} (20) = 20\pi r^{2}

    r^{2} = \frac{320\pi }{20\pi } = 16

    r = 4

    d = 8 ft.

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