Area and Circumference of Circles

The _____ is the distance from the center to any point on the circle.

• diameter
• radius
• π
• center

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

The distance across a circle through its center is called the _____.

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

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

• 181.84 ft²

• 28.26 ft²

• 37.68 ft²

• 113.04 ft²

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

• 1,519.76 m

• 379.94 m

• 69.08 m

Tags

CCSS.7.G.B.4

A pizza parlor has a large metal pizza for a sign. The sign has a diameter of 6 feet. Which of the following best represents the area of the sign?

• 28.3 ft²

• 113 ft²

• 18.84 ft²

• 16 ft²

Tags

CCSS.7.G.B.4

A circular tablecloth has a radius of 2.5 feet. Kyle is sewing a piece of ribbon around the edge of the tablecloth. If Kyle has exactly enough ribbon, which measurement is closest to the length of the piece of ribbon in feet?

• 7.85 ft

• 15.7 ft

• 19.63 ft

• 31.4 ft

Tags

CCSS.7.G.B.4

A cylindrical barrel has a diameter of 19.875 inches. Which of the following is the best estimate of the circumference of the barrel in feet?

• 10 ft

• 2 ft

• 5 ft

• 1 ft

Tags

CCSS.HSG.GMD.A.1

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

• 94.2 in

• 188.4 in

• 706.5 in

• 286.6 in

Tags

CCSS.7.G.B.4