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14 March, 09:27

Sand dollars are animals that live buried in the sand of shallow coastal waters. The thin circular body of a sand dollar is usually 2 to 4 inches wide. Find the area of a sand dollar that is 3 inches wide.

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  1. 14 March, 12:17
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    To determine the area of of the thin circular body given the diameter, use the equation, A = πd²/4.

    Substituting the given diameter to the equation,

    A = π (3²) / 4 = 9π/4

    Thus, the area of the sand dollar is approximately 7.07 in².
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