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21 July, 21:38

Find the surface area of an open box with length of 12 inches, width of 7 inches, and height of 4.5 inches

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  1. 21 July, 21:40
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    339 inches ²

    Step-by-step explanation:

    First, the formula of a rectangular prism is ...

    2 (wh+lw+lh)

    *witch means 2 (with x height + length x with + length x height) *

    So, the equation would be ...

    2 * (12*7 + 12*4.5 + 7*4.5)

    Which answers to 339.
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