Area and Circumference of Circles

What is the radius of this circle?

• 18
• 36
• 9
• 6

Tags

CCSS.7.G.B.4

What is the diameter of this circle?

• 3.5
• 6.5
• 6
• 7

Tags

CCSS.7.G.B.4

What is circumference?

• The distance around a circle.
• The space inside the circle.
• A line from side to side passing through the center.
• A line from the center to the side.

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

• c = 15π
• c = 2π15
• c = π(15²)
• c = π(7.5²)

Tags

CCSS.7.G.B.4

A Circle has a diameter of 18 meters. What is the circumference of the circle? (Best Choice)

• 9π or about 28.26 m

• 18π or about 56.52 m

• 81π or about 254.34m

• 324π or about 1017.36 m

Tags

CCSS.7.G.B.4

What is π ? (Best Choice)

• The ratio of the circumference of any circle to its diameter.
• Exactly 3.14
• Exactly 3.1415
• Exactly 3.141593

Tags

CCSS.HSG.GMD.A.1

A ball has a circumference of 9.42 cm. What is the diameter?

• 29.5788 cm
• 59.1576 cm
• 3 cm
• 1.5 cm

Here is a picture of a Ferris wheel. It has a diameter of 80 meters.How far does a rider travel in three complete rotations around the Ferris wheel?

• 753.6 meters
• 251.2 meters
• 125.6 meters
• 376.8 meters

Tags

CCSS.7.G.B.4