Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..
3
Centre = (0,0), radius = sqrt(5)
The centre is (3,-1) and the radius is sqrt(10).
x2 +y2 = R2 =16 = radius 2 R = 4
Center is (0, 0) . . . the origin.Radius is 7.
7
x^2 + y^2 = r^2
Radius = 1111
4
That's the equation of a circle with its center at the origin and a radius of 8.
The radius is sqrt(12) = 3.464 (rounded)