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19 March, 03:58

Kabir wants to know the volume of a solid right pyramid with a square base. He uses a ruler to measure the length of the base as 8 inches. He then measures the slant height to be 5 inches.

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  1. 19 March, 04:39
    0
    The hypotenuse of the right triangle used to determine the height is

    5 inches

    The leg of the right triangle that lies on the same plane as the base is

    4 inches

    The height of the pyramid is

    3 inches

    The volume of the solid pyramid is

    64 cubic inches
  2. 19 March, 05:57
    0
    The volume of a pyramid is one-third of the product of its altitude and area of the base.

    Area of the base = (8 in) ² = 64 in²

    Altitude:

    The altitude is the length of the right triangle formed from the base and the slant height as the hypotenuse.

    (5 in) ² = h² + (4 in) ²

    h = 3 in

    Volume:

    V = Ah/3

    V = (64 in²) (9 in) / 3 = 192 in³

    The volume of the solid right pyramid is equal to 192 in³.
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