Radius and Diameter Given Circumference

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 circumference? Round to the nearest whole number.

• 48

• 96

• 24

• 18

Which expression could be used to find the approximate circumference of this quilt piece?

• 2π16

• 2π8

• 2(8)

• 2(4)

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

• 20ft

• 5ft

• 31.4ft

• 62.8ft

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2

• 9.42 cm2

• unicorns are awsome

• 45.3 cm2

Find the circumference (round to the nearest hundredth).

• 14.13 cm

• 26.28 cm

• 28.26 cm

• 56.52 cm

Find the circumference (round to the nearest hundredth).

• 2.16 m

• 2.61 m

• 4.02 m

• 4.08 m

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?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

If you are given the radius of a circle how could you find the diameter of the same circle?

• Multiply the radius by 3.14

• Multiply the radius by 2

• Multiply the radius by 1/2

• Divide the radius by 2