Circumference of Circles

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

• 11.5cm2
• 9.42 cm2
• unicorns are awsome
• 45.3 cm2

Tags

CCSS.7.G.B.4

Radius 6 cm
What is the diameter? 

• 36 cm
• 12 cm
• 6 cm
• 3 cm 

Tags

CCSS.7.G.B.4

Diameter 32 cm
What is the radius?

• 16 cm

• 64 cm

• 96 cm

• 32 cm 

Tags

CCSS.7.G.B.4

Radius 4 cm
Find the circumference of the circle. 

• 25.12 cm

• 12.56 cm

• 50.24 cm

• 200.96 cm

Tags

CCSS.7.G.B.4

Diameter 13.5 m
Find the circumference of the circle.

• 84.79 m

• 42.39 m

• 21.195 m

• 572.265 m 

Tags

CCSS.7.G.B.4

Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 m. How many feet of fencing does he need?

• 37.68 m

• 18.84 m

• 113.04 m

• 452.16 m

Tags

CCSS.7.G.B.4

Other than the formula C=πd what is another formula for circumference of a circle?

• C=2π
• C=2πr
• C=πr²
• C=πd²

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

What is the circumference of a circle with a radius of 5 cm terms of π ?

• 5 π cm

• 10 π cm

• 25 π cm

• 50 π cm

Tags

CCSS.7.G.B.4

What is the diameter?

• 6.5

• 15

• 26

• 78

Tags

CCSS.7.G.B.4