Circumference and Area of Circles Practice

What is the radius of a circle if the diameter is 27?

• 35

• 13.5

• 54

Tags

CCSS.7.G.B.4

If the diameter of the large circle is 36 cm, what is the radius of each of the small circles?

• 6 cm

• 12 cm

• 18 cm

• 24 cm

Tags

CCSS.HSG.GPE.A.1

What is the formula for the area of a circle?

Tags

CCSS.7.G.B.4

What is the formula for the circumference of a circle?

Tags

CCSS.7.G.B.4

I wrapped a tape measure around the trunk of the tree and it was 14.13 feet. What is the diameter of the tree?

Use 3.14 for pi. Round to the nearest hundredth.

• 2.25 ft

• 4.50 ft

• 17.27 ft

• 44.37 ft

Tags

CCSS.7.G.B.4

Find the area of the circle.

Tags

CCSS.7.G.B.4

A round dining table has a radius of 4.5 feet. What is the area of the tabletop?

Tags

CCSS.7.G.B.4

The radius of a circle is 6.5 inches.

Find the circumference of the circle.

• 132.7 in

• 40.8 in

• 20.4 in

• 572.3 in

Tags

CCSS.7.G.B.4

Hector purchases a basketball. The diameter of the basketball is 14 cm. What is the circumference of the basketball?

• 21.98 cm

• 43.98 cm

• 87.96 cm

• 7 cm

Tags

CCSS.7.G.B.4

The homeowners association wants to enclose a circular playground in a fence. The diameter of the circular playground will be 10. What would be the area of the playground? 

• 31.4

• 78.5

• 314

• 62.8

Tags

CCSS.7.G.B.4