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What is the equation of a circle whose center is at the origin and whose radius is 9?
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What is the equation of a circle whose center is at the origin and whose radius is 9?

User Michael Kemmerzell
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2 Answers

3 votes
A=πr2=π·92≈254.469. I think this is what your looking for
User Arcones
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7 votes
√x²+y²=9 or (x²+y²) = 9² Man that was hard to type
User Siraj Pathan
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