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29 July, 13:11

A pyramid with a rectangular base has a volume of 480 cubic inches and a height of 10 inches. The width of the rectangular base is 9 inches. Find the length of the rectangular base.

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  1. 29 July, 13:23
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    We have the formula of the volume: 480 = area rectangular base x 10 / 3;

    Then, 480 x 3 = area reactangular base x 10;

    Area rectangular base = 480 x 3 / 10;

    10 x (9 x length) = 480 x 3;

    90 x width = 1440;

    length = 1440/90;

    length = 16 inches;
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