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24 October, 18:12

A rectangular solid has sides of 7cm, 9cm, and 11 cm. what is the surface area?

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  1. 24 October, 20:23
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    Answer: 478

    Step-by-step explanation:

    Surface area = 2 (lb+bh+hl)

    = 2 (7*9+9*11+11*7)

    = 2 (63+99+77)

    = 2 (239)

    = 478 square units
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