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31 January, 18:32

Rectangular prism container hold s about 1320ml of water. It's length, width and height are consecutive whole numbers. One of its dimensions is 10cm what are the dimensions of the prism?

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  1. 31 January, 21:16
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    Answer: The dimensions of the prism are

    10, 11 and 12

    Step-by-step explanation:

    The volume of the rectangular prism is 1320ml

    1 ml = 1 cm^3

    Therefore volume is:

    V = 1320 cm^3

    The volume of a rectangular prism is

    V = L * W * H

    Since It's length, width and height are consecutive whole numbers. And One of its dimensions is 10cm. Then

    1320 = 10 * (n + 1) (n+2) ... (1)

    n^2 + 3n + 2 = 132

    n^2 + 3n - 130 = 0

    Factorise

    (n - 10) (n + 13) = 0

    n = 10 or - 13

    Since it is positive, ignore - 13

    n = 10

    Substitute n in equation 1

    1320 = 10 * 11 * 12

    The dimensions of the prism are

    10, 11 and 12
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