Circle C (not shown) is drawn on a coordinate plane, centered at the origin. If the point(a, b) lies on the circumference of the circle, what is the radius of the circle in termsof a and b?
A.
B.
C.
D.
Answer:C
Circle C (not shown) is drawn on a coordinate plane, centered at the origin. If the point(a, b) lies on the circumference of the circle, what is the radius of the circle in termsof a and b?
A. B. C. D.
Explanation: C