QUIZ REVIEW: Area/Circumference of Circles

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

A DVD has a diameter of 15 millimeters. What is the circumference of the DVD in terms of  $\pi$  ?

• 15π

• 2π15

•  $\frac{15}{\pi}$  

• 15 π

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

Find the area of the circle. Use 3.14 for pi.
The radius is 7 units long.

• 43.96 units²

• 153.86 units²

• 87.82 units²

• 307.72 units²

What is the area of this circle in terms of $\pi$  ?

• 32 $\pi$  $cm^2$  

• 256 $\pi$  $cm^2$  

• 16 $\pi$  $cm^2$  

• 36 $\pi$  $cm^2$  

What is the area of this circle? Use 3.14 for pi.

• 1384.74 ft²

• 441 ft²

• 65.94 ft²

• 5,538.96 ft²

The radius is 8 inches.  What is the circumference?

• 50.24 inches
• 25.12 inches
• 12.56 inches
• 200.96 inches

Tags

CCSS.7.G.B.4

What is the area of a circle?

• 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.

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

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.

Tags

CCSS.7.G.B.4

Ms. Merine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the circumference of her earring in terms of  $\pi$  ?

• 12.25 $\pi$   cm

• 3.5 $\pi$   cm

• 38.47 $\pi$   cm