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17 November, 20:58

A rectangular prism has dimensions of 2x, 3x, and 5x. Write an expression for the total surface area of the prism.

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  1. 17 November, 21:18
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    A = 62x^2

    Step-by-step explanation:

    This rect. prism has 6 faces, stemming from two each of the areas of the top, the end and the side of the prism.

    top surface area: (2x) (3x) = 6x^2

    end surface area: (2x) (5x) = 10x^2

    side surface area: (3x) (5x) = 15x^2

    Total surface area: A = 2 (6x^2 + 10x^2 + 15x^2)

    or: A = 2 (31x^2) = 62x^2
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