Circumference Practice

What is the formula for circumference of a circle given the diameter?

• C = pi x radius

• Diameter = pi x C

• C = pi x Diameter

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 28 cm

• 43.98 cm

• 87.96 cm

• 7 cm

Find the circumference of the circle

• 50.24 yd

• 25.12 yd

• 11.14 yd

Find the circumference of the circle

• 18.84 cm

• 75.36 cm

• 37.68 cm

Find the circumference of the circle whose radius is 4 in

• 12.56 in

• 25.12 in

• 50.24 in

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft

• 246.2 ft

• 365.56 ft

• 392.5 ft

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

A pizza has a circumference of 31.40 inches. 

    What is the radius (the length of the size of pizza you would get)?

The trim around a circular pool is 43.96 ft,

what is the diameter of the pool?

• 7 feet

• 14 feet

• 12 feet

• 10 feet