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17 May, 02:39

what is the surface area in square inches of a prism with length of 12 inches and with of 9 inches. and. a height of 2 inches

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  1. 17 May, 05:43
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    300 in²

    Step-by-step explanation:

    The surface area of a prism is found using the following formula: SA = 2 (lh+lb+bh). This formula takes the area of each face (6 in total (and adds them together to find a total sum. Substitute l = 12, b = 9 and h = 2 to solve for the surface area.

    SA = 2 (lh+lb+bh)

    SA = 2 (12*2+12*9+9*2)

    SA = 2 (24 + 108 + 18)

    SA = 2 (150)

    SA = 300
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