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13 September, 12:47

The radius of a grapefruit is 5/2 inches. What is the approximate surface area? Use 22/7 for π.

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  1. 13 September, 12:56
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    19.6 in^2 approximately.

    Step-by-step explanation:

    Assume it's close to being a sphere.

    So the approximate surface area

    = 4 pi r^2

    = 4 * 22/7 * (1/2 * 5/2) ^2

    = 19.6 in^2.
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