Geometry Game for Ch. 9

Circles

100

What is the area of a circle with a radius of 7 centimeters? Use 3.14 for pi.

The answer is 153.86 square centimeters.

200

What is the circumference of a circle with a radius of 5.75 meters? Use 3.14 for pi.

The answer is 18.055 square meters.

300

What is the formula to find the circumference of a circle?

C = pi x d

400

What is the formula for the area of a circle

A = pi x r squared

500

What is the area and the circumference of a circle with a diameter of 3 inches? Round to the nearest tenth.

The area is 7.1 square inches and the circumference is 9.4 inches.