Circumference Area of Circles

Find the radius of a circle if the area is 201.1 mi²

• 10 mi

• 8mi

• 20 mi

• 5mi

Tags

CCSS.7.G.B.4

If you are going to paint the entire center circle of a basketball court, do you need to know the area or circumference of the circle?

• Area

• Circumference

• Neither

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

What is the area of this circle?

• 50.27 cm²

• 78.23 cm²

• 98.12 cm²

• 201.06 cm²

Tags

CCSS.7.G.B.4

What is the area of a circle with a diameter of 12cm?

• 452.39cm²

• 139.12cm²

• 113.1cm²

• 84.23cm²

Tags

CCSS.7.G.B.4

The homeowners association wants to enclose a circular playground in a fence. The need to find the amount of fencing they need to purchase.  Will they need the area or circumference of the playground?

• area

• circumference

• neither

Danielle wants to make a cookies for 3 friends. The radius of a cookie is 5 inches. If she wants to ice ALL 3 of the cookies, how many square inches of cookies must she cover with icing?

• 47.1 in²

• 235.5 in²

• 78.5 in²

• 15.7 in² 

Tags

CCSS.7.G.B.4

A DVD has a diameter of 15 millimeters. Which equation would help you determine the distance around the DVD?

• C = 15π

• A = π7.5²

• A = 15 ÷ π

• C = 7.5π

Tags

CCSS.7.G.B.4

Jake's cow is tied to a beanstalk with a piece of rope that is 15ft long. What is the area of the circle in which the cow can graze?

• 47.1 ft.

• 176.7 ft²

• 706.9 ft²

• 94.2 ft

Tags

CCSS.7.G.B.4

The diameter of a quarter is 24.26 mm. What is closest to the circumference of the outer edge of the quarter? Use 3.14 for Pi.

• 76.18 mm

• 38.01 mm

• 463 mm

• 1,848 mm

Tags

CCSS.7.G.B.4