7th 8-5 Solve Problems Involving Circumference

What is the diameter of a circle with a circumference of 11.27π ​ft?

• $11.27\pi^2$

• 11.27

• $\frac{11.27}{\pi}$

• 22.54

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

CCSS.7.G.B.6

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

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

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

• $132\pi$

• $\frac{66}{\pi}$

• $\frac{132}{\pi}$

• $64\pi$

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.7.G.B.4

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.7.G.B.4

Find the circumference of the circle in terms of π.

• $13\pi$

• $26\pi$

• $13\pi^2$

• $26\pi^2$

Tags

CCSS.7.G.B.4

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?

• $15\pi$

• $25\pi$

• $10\pi$

• $5\pi$

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