Question

question 8 of 10
the ____ of a circle centered at the origin measures the distance from the
origin to any point on the circle.

a. y - coordinate
b. radius
c. radius squared
d. circumference

Explanation:

A circle's radius is the distance from the center (here, the origin) to any point on the circle. The y - coordinate is just one part of a point's coordinate. Radius squared is \(r^{2}\) (used in the circle equation \(x^{2}+y^{2}=r^{2}\)). Circumference is \(C = 2\pi r\) (the perimeter of the circle). So, the radius fits the description.

Answer:

B. radius