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OpenStudy (anonymous):
What is the equation of the circle with the center at the origin and with a radius of 9?
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OpenStudy (anonymous):
The equation of a circle is \[(x-a)^2 + (y=b)^2 = r^2\] where (a,b) is the center and r is the radius. So substitute your values in :)
OpenStudy (aravindg):
Hi there welcome to openstudy !
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