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29 November, 10:32

A cake has a circumference of 25 1/7 inches. What is the area of the cake? Use 22/7 to approximate pi. Round to the nearest hundredth

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  1. 29 November, 10:49
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    If circumference = (2 * PI * radius) then we solve for radius

    radius = circumference / (2 * PI) radius = 25.142758 / 22/7 * 2radius = 4.00

    circle area = PI * radius^2circle area = 22/7 * 4^2circle area = 22/7 * 16 circle area = 50.29 square inches
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