8
7
Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..
Radius = 1111
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3
The radius is sqrt(12) = 3.464 (rounded)
Centre = (0,0), radius = sqrt(5)
That's the equation of a circle with its center at the origin and a radius of 8.
If you mean: x^2 + y^2 = 121 then the radius is the square root of 121 which is 11
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9