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4vir4ik [10]
4 years ago
12

What's the radius of a circle with an area of 64 square feet?

Mathematics
1 answer:
Nady [450]4 years ago
6 0
Area = \pi r ^{2}
64 = \pi r ^{2}
\frac{64}{ \pi } =r^2
r= \frac{ \sqrt{64} }{ \sqrt{ \pi } } = \frac{8}{ \sqrt{ \pi } }

If you want the denominator rationalized, the answer is \frac{8 \sqrt{ \pi } }{ \pi }
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