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3 December, 16:54

What is the ratio for the surface areas of the rectangular prisms shown below, given that they are similar and that the ratio of their edge lengths is 3:1

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  1. 3 December, 18:24
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    9 : 1

    Step-by-step explanation:

    given a linear ratio = a : b, then the corresponding area ratio is

    a² : b²

    Here the linear ratio of their edges = 3 : 1, hence

    ratio of surface areas = 3² : 1² = 9 : 1
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