Circles Quiz

What is the formula used for finding the area of a circle?

• A=2r

• A=πr

• A=π(r^2)

• A=r^2

What is the formula used for finding the circumference of a circle?

• C = 2πd

• C = 2r

• C = πd

• C =2d

Find the circumference of the circle. Leave your answer in terms of pi.

Find the area of the circle. Leave your answer in terms of pi.

A circle has a diameter of 8 cm. What is the area of the circle?

• 16 cm

• 16π cm

• 8π cm

• 8 cm