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OpenStudy (anonymous):
If the equation of a circle is (x + 5)^2 + (y - 7)^2 = 36, its radius is *6 *16 *36
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hartnn (hartnn):
\((x-a)^2+(x-b)^2=r^2\) will have the radius as 'r' so, r^2 = 36 r=.. ?
OpenStudy (anonymous):
So it's36?
hartnn (hartnn):
r^2 = 36 and we need 'r' !
OpenStudy (anonymous):
OH. So it's 6!
hartnn (hartnn):
yes!
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