Circumference and Area of a Circle Practice

What is the diameter?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

What is the radius?

• 18 ft

• 72 ft

• 38 ft

• 14 ft

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Tags

CCSS.7.G.B.4

The radius of the circle is 9 meters. What is the circle's circumference? Use  $\pi=3.14$  .

• 9 m

• 28.26 m

• 56.52 m

• 18 m

What is the circumference of this circle? Round to the nearest tenth. Use $\pi=3.14$ .

• 3.14 cm 

• 37.7 cm

• 24 cm

• 68.4 cm

Find the area of the circle. Use  $\pi=3.14$  .

• 43.96 

• 153.86

• 87.82

• 307.72

 Find the area of the circle. Use $\pi=3.14$ .

• 56.52 inches squared

• 254.34 inches squared

• 1017.36 inches squared

• 113.04 inches squared

 Find the area of the circle below. Use $\pi=3.14$ .

• 100 cm squared

• 225 cm squared

• 9 cm squared

• 28.26 cm squared

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

What formula is this used for:
πr²

• Circumference 
• Area
• Surface Area
• Volume

Tags

CCSS.7.G.B.4