Circumference TO AREA

A remodeling project calls for sanding a chair with a disk sander. The sanding disk used on the sander has a radius of 4.5 inches. Find the area of the disk. Use 3.14 for π

•  about 64.79 in2
•  about 55.19 in2
•  about 63.59 in2
•  about 53.79 in2

Tags

CCSS.7.G.B.4

Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.

• 4 in.
• 8 in.
• 12 in.
• 16 in.

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 8322

• 1134

• 4536

• 1267

The diameter of the face-off circle on an ice-hockey rink is 30 feet. Find its area.

• 675.6 ft^2

• 29.67 ft^2

• 545.8 ft^2

• 706.5 ft^2

Tags

CCSS.7.G.B.4

The circumference is 62.8 inches.  What is the radius?

• 20 inches
• 10 inches
• 6.28 inches
• 31.4 inches

Tags

CCSS.7.G.B.4

If the circumference of a circle is 28π, what is the radius of the circle?

• 28
• 14
• 56
• 196

Tags

CCSS.7.G.B.4

The circumference of a circle is 100.48 inches. What is the radius?

• 32 inches

• 16 inches

• 20 inches

• 10 inches

Tags

CCSS.7.G.B.4

The circumference of a circle is 56.52 inches. What's the area?

• 254.34 in²

• 264.34 in²

• 274.34 in²

• 284.34 in²

Tags

CCSS.7.G.B.4

The circumference is 62.8 inches. What is the area?

• 314

• 31.4

• 3.14

• 3140