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OpenStudy (anonymous):
Sarah and Kelvin are calculating the area of a circle with a radius of 52 cm. Kelvin uses 3.14 for pi when calculating this area while Sarah uses the pi button on her calculator. Kelvin gets a solution of 8,490.56 cm2, and Sarah gets a solution of 8,494.87 cm2. . Who has the most accurate solution? Why?
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