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OpenStudy (anonymous):
Which of the following is the equation of a circle whose center is at the origin and whose radius is square root of 5 ?
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OpenStudy (anonymous):
x2 + y2 = 5 x2 + y2 = 10 x2 + y2 = 25
OpenStudy (chriss):
The equation of a circle with the center at the origin is\[x^{2}+y^{2}=r^{2}\]
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