Area and Circumference of Circles

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

What is the area of the square that is not covered by the pink circle? (use 3.14 for pi)

• 78.5 in²

• 21.5 in²

• 31.4 in²

• 68.6 in²

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

Tags

CCSS.7.G.B.4

The circumference is 62.8 inches. What is the radius? (Use 3.14 for π)

• 20 inches

• 10 inches

• 6.28 inches

• 31.4 inches

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm

• 30 mm

• 25.3 mm

• 34.54 mm

Tags

CCSS.7.G.B.4

Elsie bought a circular rug that is 9 feet in diameter. What is the circumference of the rug rounded to the nearest tenth of a foot?

• 4.5 feet

• 14.1 feet

• 28.3 feet

• 56.5 feet

Tags

CCSS.7.G.B.4

What is π ? (Best Choice)

• The ratio of the circumference of any circle to its diameter.

• Exactly 3.14

• Exactly 3.1415

• Exactly 3.141593

Tags

CCSS.HSG.GMD.A.1

A bike tire has a radius of 1.5 feet. How far will the bike go if the wheel rotates around 3 full times? (round your answer to the nearest foot)

• about 28 feet

• about 14 feet

• about 9 feet

• about 5 feet

Tags

CCSS.7.G.B.4

How much cement would be needed to cover this circular parking lot?

• 1385.44 square feet

• 2142.12 square feet

• 5541.77 square feet

• 1289.12 square feet

Tags

CCSS.7.G.B.4