3 years ago

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

2 answers:

8 0

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

Ksivusya [100]3 years ago

5 0

S= $\pi r^{2}$
100 pi = $\pi r^{2}$
100 = r 2
r = 10 cm
d= 2*10=20 cm

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