Area and Circumference Review

Swimming from one side of this pool through the center to the other side is 12 feet. What is the radius of this pool?

• 32 ft

• 6 ft

• 4 ft

• 12 ft

Tags

CCSS.7.G.B.4

From the center of this CD to the edge of the CD is 4 inches. How far is the distance all the way across the CD?

• 16 in

• 8 in

• 12 in

• 2 in

Tags

CCSS.7.G.B.4

If the radius of this pizza is 10 inches, what is the diameter?

• 15 in

• 5 in

• 100 in

• 20 in

Tags

CCSS.7.G.B.4

The diameter of this wheel is 32 in, how long is the radius?

• 64 in

• 18 in

• 16 in

• 8 iin

Tags

CCSS.7.G.B.4

The radius of this coin is 7 mm. What is the diameter?

• 3.5 mm

• 14 mm

• 21 mm

• 49 mm

Tags

CCSS.7.G.B.4

The diameter is 12 in. What is the radius?

• 24 in

• 8 in

• 144 in

• 6 in

Tags

CCSS.7.G.B.4

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

• Radius
• Diameter

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

Tags

CCSS.7.G.B.4

 What are the formulas for circumference of a circle?

• C = π r

• C = π d

• C = 2 π r

• C = 2 π d

Tags

CCSS.7.G.B.4

What is the area of a circle with a radius of 2? (use 3.14 for pi)

Tags

CCSS.7.G.B.4