RAWANA3312 RAWANA3312

17-05-2018
Mathematics

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If area of a circle measures 16/25 pi cm square, what is the circumference of the circle in terms of pi

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17-05-2018

A = pi*r^2

(16/25)*pi = pi*r^2

16/25 = r^2

rt(16/25) = r

r = 4/5

C = 2pi*r
C = 2pi*(4/5)
C = (8/5) pi cm

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