Circles

What is the diameter?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

What is the circumference?

• 25.12 cm

• 45 cm

• 50.24 cm

• 200.96 cm

What is the radius?

• 18 ft

• 72 ft

• 38 ft

• 14 ft

What is the circumference?

• 36
• 18π
• 108π
• 36π

Tags

CCSS.7.G.B.4

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

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 + π

Is the red line a radius or diameter of the circle?

• Area

• Circumference

• Diameter

• Radius

What is the circumference of a circle with a diameter of 9?

• 81π
• 9π
• 3π
• 6π

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

Radius 5 in
Find the area of the circle.

• 15.7 inches²
• 31.4 inches²
• 314 inches²
• 78.5 inches²

Tags

CCSS.7.G.B.4

The space contained inside of a circle is called the...

• radius
• diameter
• circumference
• area

Tags

CCSS.HSG.GMD.A.1