Diameter and Radius of a Circle

If the radius is 5 inches what is the diameter?

• 5 inches

• 2.5 inches

• 10 inches

• 50 inches

If the diameter is 20 feet, the radius is what?

• 40 feet

• 20 feet

• 10 feet

• 5 feet

If the radius is 2 inches, the diameter is what?

• 1 inch

• 2 inches

• 4 inches

• 8 inches

If the diameter is 100 feet, the radius is what?

• 200 feet

• 100 feet

• 50 feet

• 25 feet

The distance from a point on the surface of a circle that passes through the center to the other side of the circle is (a)  

• diameter

• radius

• volume

• cone

• cylinder

• sphere

What is the radius measurement? ​ (a)  

• 6 cm

• 12 cm 

• 24 cm

What is the radius?

What is the diameter?

What is the diameter?

• 50.24 square feet

• 100.48 square feet

• 200.96 square feet

• 25.12 square feet