Basic Circles - area & circumference

Steven purchases a bowl. The diameter of the

bowl is 14 cm. What is the circumference of the

bowl? Use 3.14 for π

• 28 cm

• 43.96 cm

• 87.96 cm

• 7 cm

Cynthia wants to buy a round photo frame for

her brother. The radius of the photo frame is 9 cm.

What is the photo frame’s circumference? Keep your answer in terms of π

• 9π cm

• 4.5π cm

• 81π cm

• 18π cm

The circumference of a circle is

• The measurement from an edge of a circle to another edge.
• The measurement around the circle
• The measurement from an edge of a circle to another edge going through the center
• The measurement from the center of the circle to an edge of the circle

What is the radius of this circle?

• 18 in

• 10 in

• 9 in

• 8 in

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

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

• Diameter
• Radius

A DVD has a diameter of 15 millimeters. Which equation would help you determine the area?

• A = 15²π

• A = 2π15

• A = 7.5²π

• A = 15 π

What is the approximate area of the given circle?

• 94.8 cm²

• 47.4 cm²

• 716 cm²

• 2863.8 cm²

Ms. Catall is using a compass to find her way out of the woods. The compass has a radius of 4 centimeters. What is the compass's area?

• 49.2 cm²
• 45.6 cm²
• 50.24 cm²
• 55.9 cm²

Mr. Smith wants to cover his circular pool. If the pool has a diameter of 13 feet how much fabric would he need to cover the pool? (round to the nearest whole number)

• 41 ft²

• 133 ft²

• 250 ft²

• 531 ft²