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9 January, 20:20

The volume of a cylinder is 1029pi cmcubed. The radius of the base of the cylinder is 7 cm. What is the height of the cylinder?

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Answers (2)
  1. 9 January, 20:24
    0
    Height is 21cm

    Step-by-step explanation:

    Volume of the cylinder = 1029pi

    Base area = 7x7xpi = 49pi

    Therefor the height = 1029pi/49pi=1029/49 = 21cm
  2. 9 January, 20:40
    0
    21 cm.

    Step-by-step explanation:

    V = π r^2 h

    1029π = π * 7^2 * h The π is common so:

    1029 = 7^2 h

    h = 1029 / 49

    = 21 cm.
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