Circles

Area

100

Find the area of a circle with a radius of 3in.

28.26 in²

200

What is the area of a circle with a radius of 4.5in?

63.585in²

300

What is the area of a circle with a diameter of 10ft?

78.5ft²

400

What is the area of a circle with a diameter of 20 meters?

314 meters squared

500

The area of a circle is 254.34 cm²

^{What is the radius?}

9 cm

Circumference

100

What it is the circumference of a circle with a diameter of 3in?

18.84in

200

What is the area of a circle with a radius of 4.5in?

28.26in

300

What is the circumference of a circle with a diameter of 10ft?

31.4ft

400

What is the circumference of a circle with a diameter of 20 meters?

62.8 meters

500

What is the diameter of a circle that had a circumference of 12.56 cm?

4 cm

Definitions

100

What is the numerical value of pi?

3.14

200

What is the radius of a circle?

The distance from the center of a circle to the outside of the circle.

300

What is the diameter of a circle?

The distance from the edge of the circle through the center to the other edge of the circle.

400

What is the circumference of a circle?

The distance around the outside of a circle.

500

What is the area of a circle?

The amount of space a circle takes up.