Circles - Circumference & Area

The circumference of a circle is

• The distance from one edge of a circle to another edge.

• The distance around the circle.

• The distance from one edge of a circle to another edge going through the center

• The distance from the center of the circle to an edge of the circle

What is the radius of this circle?

• 18in
• 36in
• 9in
• 8in

Tags

CCSS.7.G.B.4

Find the circumference of the circle in the image, in terms of  $\pi$  .

• 10π

• 20π

• 100π

• 20

Tags

CCSS.7.G.B.4

Enrique purchases an antique bowl for his mom for Mother's Day. The diameter of the bowl is 18 cm. What is the circumference of the bowl? (Round to the nearest whole number.)

• 28 cm

• 57 cm

• 254 cm

• 1018 cm

Tags

CCSS.7.G.B.4

The amount of square units needed to cover a surface is _______________.

• area.

• circumference.

• diameter.

• radius.

What is the area of a circle with a radius of 14.4 meters?

• 651.1 meters
• 2604.44 meters
• 162.7 meters

Tags

CCSS.7.G.B.4

The diamter of a large pizza at Pasquale's is 16 in. What is the approximate area of the pizza? (Round your answer to the nearest hundredths.)

• 50.27 in²

• 100.53 in²

• 201.06 in²

• 804.25 in²

Tags

CCSS.7.G.B.4

The homeowners association wants to enclose the circular playground in a fence. How much fencing will they need to purchase? Is this question finding the area, circumference, or neither?

• area

• circumference

• neither

Tags

CCSS.7.G.B.4

The Swan family installs an aboveground pool. The diameter of the pool is 24 feet. What formula would you use to determine the amount of material the Swan family will need to cover their pool?

• Circumference $\left(C=\pi d\right)$

• Area ( $A=\pi r^2$ )

Tags

CCSS.7.G.B.4

What is the radius, in feet, of a circle that has a circumference of 24 $\pi$  ?

• 144 ft.

• 48 ft.

• 24 ft.

• 12 ft.

Tags

CCSS.7.G.B.4