Circumference Area Radius and Diameter

• center
• diameter
• radius

What is the radius?

• 18

• 72

• 38

• 14

Find the circumference of a circle with a radius of 12.5 mm.

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

The circumference of the circle is 56.52 meters. What is the circle's radius?

• 9 meters

• 28.26 meters

• 56.52 meters

• 18 meters

What is the diameter?

(do not find circumference)

• 8

• 16

• 10

• 4

A circular swimming pool is has a circumference of 65.94 ft. What is the diameter of the pool?

• 207.05 ft

• 42 ft

• 21 ft

• 10.5 ft

The distance from any point on the outside of a circle to the center of the circle is called what?

• Diameter

• Circumference

• Area

• Radius

The distance across a circle through the center is called what?

• Area

• Diameter

• Circumference

• Radius

The distance around the outside of a circle is called what?

• Perimeter

• Area

• Circumference

• Diameter

If the radius of a circle is 4 inches, what is the diameter?

• 2 inches

• 2 feet

• 4 inches

• 8 inches