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24 January, 03:25

The volumes of two similar solids are 729 m3 and 125 m3. The surface area of the larger solid is 324 m2. What is the surface area of the smaller solid?

A) 56 m2

B) 100 m2

C) 500 m2

D) 200 m2

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Answers (1)
  1. 24 January, 06:19
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    The correct answer is option B) : "100 m2" because:

    the ratio of the two solid is 729/125

    the ratio of the surface area = (729/125) ^ (2/3) = 81/25

    surface area = 25 * 324 / 81 = 100 m 2
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