Circumference of Circles and Diameter or Radius

What is the circumference of this circle ?

• 3.14 cm

• 37.68 cm

• 24 cm

• 68.4 cm

Tags

CCSS.7.G.B.4

A circular swimming pool is 21 feet in diameter.

How many feet around is the pool?

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Tags

CCSS.7.G.B.4

The circumference of a circle is

• The measurement from an edge of a circle to another edge.

• The measurement around the circle

• The measurement from an edge of a circle to another edge going through the center

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

What is the distance around a circle?

• Circumference

• Area

• Diameter

• Radius

Sally has car tire with a circumference of 75.36 ft. What is the radius of the car tire and what is the diameter? (Use 3.14 for pi)

• r=12 ft

• d=26 ft

• r=13 ft

• d=24 ft

Tags

CCSS.7.G.B.4

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

What is the circumference of the following shape? (use an exact value)

• 14π mi

• 7π mi

• 49π mi

• 43.98 mi

Tags

CCSS.7.G.B.4

What is the approximate circumference of a plate with a diameter of 10 inches? Use 3.14 for Pi.

Mathematical Equivalence

ON

Tags

CCSS.Math.Content.7.G.B.4

The stained glass window is a semicircle. What is the distance around the window?

• 40.82 inches

• 66.82 inches

• 81.64 inches

• 107.64 inches

Tags

CCSS.3.MD.D.8

If the diameter of a circle is 10 mm, the circumference is approximately ___

• 314 mm

• 3.14 mm

• 31.4 mm

• 20 mm

Tags

CCSS.7.G.B.4