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11-04-2019
Mathematics

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Please help me with this question! A circle has an area of 40 square meters. Which answer is closest to the measure of its diameter?

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11-04-2019

Area=pi r^2

40=3.14 x r^2
Divide both sides by 3.14
12.7=r^2
Square root of both sides
3.6=r
Diameter is 3.6 x2

7.2

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