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12 July, 10:40

An aquarium has a length of 20 inches, a width of 10 inches, and a height of 18 inches. The directions tell you to fill the aquarium until you have a 2-inch gap between the top of the water level and the top of the aquarium. What is the volume of the water?

400 in. 3

3,600 in. 3

3,200 in. 3

2,304 in. 3

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  1. 12 July, 13:08
    0
    The answer is 3,200 in. 3

    The volume of the rectangle (V) with length l, width w, and height h is:

    V = l * w * h

    If you want to fill the aquarium until you have a 2-inch gap between the top of the water level and the top of the aquarium, then the height of the water space is 2 inches smaller than the height of the aquarium. Therefore:

    l = 20 in

    w = 10 in

    h = 18 in - 2 in = 16 in

    The volume of the water is:

    V = 20 * 10 * 16 = 3,200 in ³
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