tabbycat902119 tabbycat902119

27-03-2017
Mathematics

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a circular pen has an area of 64Pi square yards. what is the circumfrence of the pen?

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stim100986 stim100986

27-03-2017

area = pi*r^2

64pi = pi * r^2

64 = r^2

r = 8

C = 2 * pi * r

C = 2 * pi * 8

C = 16 pi

C @ 50.27 sq yd

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