Area and Circumference of a Circle

A DVD has a diameter of 15 millimeters. What is the circumference?

• c = 15π

• C = 2π15

• c = 15/π

• c = 15/2π

Find the circumference of the circle below.

• 9.42 cm

• 18.84 cm

• 19.36 cm

• 28.26 cm

What is the area of this circle? (use 3.14 for π)

• 6082.12 units²

• 1519.76 units²

• 1893.14 units²

• 1292.92 units²

Find the circumference of the circle. (use 3.14 for π)

• 43.96 units

• 153.86 units

• 87.82 units

• 307.72 units

Find the area of the circle below.

• 7.065cm²

• 26.28 cm²

• 18.84 cm²

• 28.26 cm²

Mr. Reinbold's dining room table is round and has a radius of 4.5 feet. What is the top of the table's area (rounded to the nearest whole number)?

• 64 ft²

• 63 ft²

• 254 ft²

• 28 ft²

What is the area of this circle?

• 7 m²

• 153.86 m²

• 38.465 m²

• 12.25 m²

Find the area of the circle.

• 43.96 units²

• 153.86 units²

• 87.82 units²

• 307.72 units²

What is the area of a circle with a radius of 21 cm?

• 1384.74 cm²

• 2142.12 cm²

• 4348.08 cm²

• 1289.12 cm²

You purchases a pan for cooking omelets. The diameter of the surface of the pan is 14 cm. What is the area of the omelet pan's surface? (Round to the nearest whole number.)

• 154 cm²

• 50 cm

• 615 cm²

• 616 cm²