Circumference and Area of Circles

Front

A circle has a diameter of 11 meters. What is the circumference of the circle in meters?

Back

34.54 m

Front

A circular railroad-crossing sign has a diameter of 30 inches. What is the area of the sign in square inches?

Back

706.5 in.²

Front

What is the circumference of a circular opening with a radius of 3.5 centimeters?

Back

21.98 cm

Front

Diameter of the coin is 3.3 cm. What is the closest circumference? Options: 10.5 cm, 3.5 cm, 7.5 cm, 9.1 cm.

Back

10.5 cm

Front

A rotating sprinkler sprays water at a radius of 12 feet. Determine the area of the lawn that is watered.

Back

452.16 ft²

Front

The circular opening of a tunnel has a circumference of 49 meters. Which equation can be used to find d, the diameter of the tunnel opening in meters? Options: π • 49 = d, 49 ÷ 2π = d, 2 • π • 49 = d, 49 ÷ π = d

Back

49 ÷ π = d

Front

The diagram models the length from the center of a wind turbine to the tip of one of its blades. Which of these is closest to the total area covered by the blade when the turbine makes 1 revolution? Options: 78.50 m², 31.4 m², 62.8 m², 314 m²

Back

78.50 m²

Front

Jennifer painted a tabletop that is shaped like a circle. The circumference of the tabletop is 6π feet. What is the area of the tabletop in square feet?

Back

28.26 ft²

Front

The Carrillo family has a circular swimming pool with a diameter of 15 feet. What is the area of the pool cover to the nearest tenth?

Back

176.7 ft²

Front

What is the maximum area that can be effectively lit by a spotlight with a circular area of up to 6 meters in diameter?

Back

28.26 m²