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Maurinko [17]
3 years ago
7

If the area of a circle is 121pie square units, what is the diameter

Mathematics
1 answer:
velikii [3]3 years ago
4 0
Since you are given the area, we can solve for radius with this equation:
A_c = \pi r^2
r = \sqrt{ \frac{A_c}{ \pi } } = \sqrt{ \frac{121 \pi }{ \pi } } = \sqrt{121} = 11

The radius is 11, so the diameter must be 2 times that, which is 22. With the correct units, the answer is 22 units²
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