Grayfox5
A circular disc has a diameter of 24 centimeters. What is the area of the disc?



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madscientist101
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144pi

rulnick
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144 pi cm^2, because area = pi d^2 / 4 and d = 24 cm.

madscientist101
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or... simply A=pi(r^2)
and r=d/2

rulnick
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In decimal, that's about 452.4 cm^2.

ChrisS
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\[\pi*r^{2}\]
\[\pi*12^{2}\]
\[144\pi\]