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03-06-2016
Mathematics

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The area of a circle is 100(Pi), what's its diameter?

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1234519 1234519

03-06-2016

20 I believe, if the area is equal to the radius squared times Pi then the radius is 10 (found by the square root of 100) and the diameter is two times the radius

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03-06-2016

S= [tex] \pi r^{2} [/tex]
100 pi = [tex] \pi r^{2} [/tex]
100 = r 2
r = 10 cm
d= 2*10=20 cm

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