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The 周长 of a circle is 13pi m. What is the area, in square meters? Express your answer in terms of pipi.

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解答

Thecircumferenceofacircleis13πm.Whatisthearea,insquaremeters?Expressyouranswerintermsofpiπ.

解答

area:132.73m2
求解步骤
Given:circumference:13πm
给定 Circumference=13π的圆半径:r=6.5
给定 r=6.5的圆面积:A=132.73228…
area:132.73m2

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