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 Interactive Checkpoint
 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?

 c)