estimate the radius of each circle with the given cirumference. Round your answer to the nearest ten

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40 km the radius of a circle with given circumfrenece 

May 12th, 2015

3.14 x 2r = 40

6.28r = 40

r = 40/6.28 = 6.37   rounded to nearest ten 

    = 6.4

May 12th, 2015

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May 12th, 2015
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