Circles and Circumference

What is the area of a circle with a radius of 1?
¿Cuál es el área de un círculo con un radio de 1?

Calculate the circumference of the circle.
Calcula el circunferencia del círculo.

Find the exact circumference of the circle using the given circumscribed polygon.

• 11π yd

• 11 yd

• 25π cm

• 11√2π cm

Here is a picture of a Ferris wheel. It has a diameter of 80 meters.How far does a rider travel in three complete rotations around the Ferris wheel?

• 753.6 meters

• 251.2 meters

• 125.6 meters

• 376.8 meters

• 7.85 ft

• 15.7 ft

• 19.63 ft

• 31.4 ft

• F

• G

• H

• J

How many cookies are there?

• 48 cookies

• 24 cookies

• 8 cookies

• 4 cookies