Circumference of Circle

A center circle on a basketball court has a diameter of 12 feet.  How long is the line that wraps around the circle? (Best Choice)

• 6π or about 18.84 ft

• 12π or about 37.68 ft

• 36π or about 113.04 ft

• 144π or about 452.16 ft

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

If my diameter is 19 inches, what is my radius?

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

• Diameter is: DE
• Diameter is: BA
• Diameter is: BC
• Diameter is: DC

The swinging door at the local ice cream parlor has a circular window. What is the approximate distance around the window, in feet? Use π≈3.14

Randy shops for circular stepping stones for his yard. He finds a stone with a circumference of 36 inches. What is the diameter of the stone, in inches? Use π≈3.14

A park is shaped like a circle. Students determine that to walk along the diameter of the park you would need approximately 76 steps. How many steps would be needed to walk along the outside of the circle?

Alyssa wants to tie a ribbon around a basketball.  She needs enough ribbon to wrap around the basketball and 20 inches extra to tie the bow.  The basketball has a 4.2 inch radius.  How many inches of ribbon will she need?

The diameter of Mickey’s Fun Wheel in Disneyland is 45.45 meters.  What is the circumference of the Fun Wheel?

A group of students stood in a circle to play a game. The circle had a diameter of 13 meters. Which measurement is closest to the circumference of the circle in meters?