Circumference of a Circle

Daniel wants to buy cookies for her friend. The radius of a cookie is 5 inches. What is the cookie’s circumference?

• 10 in

• 2.5 in

• 15.7 in

• 31.4 in 

What is the approximate numerical value of this sign?

• 3.11

• 3.14

• 4.13

• 6.28

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

What is the diameter?

• 6.5

• 15

• 26

• 78

Find the circumference of the circle.

• 28.26 m

• 56.52 m

• 113.04 m

• 14.13 m

Find the circumference of the circle.

• 78.5

• 15.7 ft

• 62.8 ft

• 31.4 ft

Find the circumference of the circle.

• 75.36 yd

• 37.68 yd

• 18.84 yd

• 150.72 yd

Find the circumference of the circle.

• 15.54 cm

• 31.09 cm

• 62.17 cm

• 124.34 cm

Find the circumference of the circle.

• 125.6 km

• 31.4 km

• 62.8 km

• 15.7 km

Find the circumference of the circle.

• 18.84 cm

• 9.42 cm

• 37.68 cm

• 4.71 cm