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14 November, 16:44

The ratio of the volume of two solids is 1331:729. What is the ratio of the surface area

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  1. 14 November, 20:36
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    Volume ratio = 1331/729 which is the cube of the linear scale factor.

    To find the linear scale factor, let find the cubic root of the numerator & the denominator:

    ∛1331 = ∛11³ = 11

    & ∛729 = ∛9³ = 9

    So the linear scale is 11/9 = = > then the ratio of their surface area will be:

    11²/9² = = > 121/81.

    Note, if you have a linear scale, then the surface will be the square othis scale & the volume will be the cube of the linear scale
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