Radius: The distance from the center of a circle to any point on the circle. Also, the line segment that has the center of the circle as one endpoint and a point on the circle as the other endpoint.

Answer the following questions about the radius of
a circle.

Enter each answer below and press tab
to check.

Graded Response

a) What is the radius of a circle with a diameter
equal to 5?

a)

b) Point A is the center of a circle. Points B and
C are on circle A. If AB = 7, what is AC?

b)

c) What is the radius of a circle with area equal
to 64?