Area and Circumference of Circles

Front

Is the red line a radius or diameter of the circle?

Back

Radius

Front

What is the radius of this circle? Options: 18in, 36in, 9in, 8in

Back

9in

Front

A ball has a circumference of 9.42 cm. What is the diameter?

Back

3 cm

Front

What is the distance around a bowl with a diameter of 14 cm?

Back

43.98 cm

Front

What is the diameter? Options: 8cm, 16cm, 10cm, 4cm

Back

16cm

Front

A cruise ship has a large, circular window with a diameter of 6 meters. How many square meters of glass is the window made of?

Back

28.27 m²

Front

To paint the entire center circle of a basketball court, do you need to know the area or circumference?

Back

Area

Front

The radius of a circle is 6.5 inches. Find the circumference of the circle.

Back

40.8 in

Front

What is the area of this circle?

Back

50.27 cm²

Front

Area of a circle with a diameter of 12cm?

Back

113.1cm²