Circumference of a Circle

The formula for Circumference is...

• 2πr

• πr²

• πd

• ¹/₂ Bh

Tags

CCSS.7.G.B.4

Circle A has a radius of 21 meters. What is its circumference?

• 131.88

• 65.94

• 207.05

• 103.53

Tags

CCSS.7.G.B.4

How much fencing is required to enclose a circular garden whose radius is 14 ​m?

• 43.96

• 87.92

• 138.03

• 276.35

Tags

CCSS.7.G.B.4

Find the circumference of the circle in terms of π.

Tags

CCSS.7.G.B.4

The diameter of the circle is 18 m. Eugene incorrectly says that the circumference of the circle is about 113.04 m. What is the circumference of the​ circle? What mistake did Eugene ​make? Use 3.14 for π.

• Eugene used 9 instead of 18 for diameter.

• Eugene did not multiply by 3.14.

• Eugene used 36 instead of 18 for diameter.

• Eugene squared the diameter.

Tags

CCSS.7.G.B.4

What is the diameter of a circle with a circumference of 132 ​ft?

Tags

CCSS.7.G.B.4

How many​ flowers, spaced every 4 ​in., are needed to surround a circular garden with a 200​-in. ​radius?

• 1256

• 157

• 314

• 628

Tags

CCSS.4.MD.A.2

Wheel A has diameter 25.4 in. Wheel B has diameter 22.5 in. About how much farther will Wheel A travel in one rotation than Wheel​ B?

• 12.2

• 9.1

• 8.5

• 10.7

Tags

CCSS.HSG.SRT.C.8

Circle Y has a radius of 22 meters and Circle Z has a radius of 27 meters. Find the circumferences of each circle. By how many meters is the circumference of Circle Z greater than the circumference of Circle​ Y?

Tags

CCSS.7.G.B.4

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

Tags

CCSS.7.G.B.4