Question #N678
A circle with center (2, 3) is tangent to the x-axis. What is the radius of this circle?
A. 2
B. 3
C. 5
D. 13
Correct Answer is: B
Since the circle is tangent to the x-axis, the distance from the center of the circle to the x-axis is equal to the radius. The y-coordinate of the center of the circle is 3, so the radius of the circle is 3.