Area & Circumference of Circles

The diagram shows the radius of the circular opening of a drinking cup. Which of the following is closest to the circumference of the opening in centimeters?

• 12 cm

• 50 cm

• 25 cm

• 8 cm

Tags

CCSS.7.G.B.4

A group of students stood in a circle to play a game. The circle had a diameter of 22 meters. Which measurement is closest to the circumference of the circle in meters?

• 34.54 m

• 1,519.75 m

• 379.94 m

• 69.08 m

Tags

CCSS.7.G.B.4

Jennifer painted a tabletop that is shaped like a circle. The diameter of the table top is 6. Which measurement is closest to the area of the tabletop in square feet?

• 18.84 ft²

• 28.26 ft²

• 37.68 ft²

• 113.04 ft²

Tags

CCSS.7.G.B.4

A circular railroad crossing sign has a diameter of 30 inches. Which measurement is closest to the area of the sign in inches?

• 94.2 in²

• 188.4 in²

• 706.5 in²

• 286.6 in²

Tags

CCSS.7.G.B.4

The diameter of a round fountain is 16.6 feet. What is the approximate area covered by the fountain?

• 200 sq. ft.

• 400 sq. ft.

• 600 sq. ft.

• 800 sq. ft.

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a radius of 15 cm?

• 23.55 cm

• 47.1 cm

• 94.2 cm

• 706 cm

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a diameter of 5 cm?

• 7.85 cm

• 15.7 cm

• 19.625 cm

• 31.4 cm

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a radius of 10 inches?

• 31.4 inches

• 62.8 inches

• 100 inches

• 314 inches

Tags

CCSS.7.G.B.4

A circular wall clock has a radius of 12.5 inches. Which of the following is closest to the circumference of the clock in inches?

• 157 in

• 275 in

• 78.5 in

• 39.25 in

Tags

CCSS.7.G.B.4

A circular mirror has a radius of 21 inches. Which of the following is closest to the area of the mirror in square inches?

• 1,764 in²

• 264 in²

• 132 in²

• 1,385 in²

Tags

CCSS.7.G.B.4