Circumference of Circles

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

Find the circumference (to the nearest whole number)

• 88 in
• 44 in
• 116 square in
• None of the above

Tags

CCSS.7.G.B.4

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

Tags

CCSS.7.G.B.4

The local rodeo has a circular pin, with a diameter of 48 feet, in which they keep the horses. What is the circumference of the horse pin?

• 150.72 feet
• 140.72 feet
• 130.72 feet
• 160.72 feet

Tags

CCSS.7.G.B.4

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

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

A ball has a circumference of 9.42 cm. What is the diameter?

• 29.5788 cm
• 59.1576 cm
• 3 cm
• 1.5 cm

Tags

CCSS.7.G.B.4

A DVD has a diameter of 15 millimeters. Which equation would help you determine the distance around the DVD?

• C = 15π

• A = π7.5²

• A = 15 ÷ π

• C = 7.5π

Tags

CCSS.7.G.B.4

If the circumference of a circle is 69.08 ft, what is the DIAMETER?

• 22 ft

• 11 ft

• π ft

• 0 ft

Tags

CCSS.7.G.B.4

If the circumference of a circle is 138.16 ft, what is the RADIUS?

• 22 ft

• 11ft

• π ft

• no ft

Tags

CCSS.7.G.B.4

A child's bicycle tire has a diameter of 15 inches. How many approximate revolutions will the tire make if the child travels 500 feet?

• 33 revolutions

• 127 revolutions

• 64 revolutions

• 153 revolutions

Tags

CCSS.5.MD.A.1