Here is a picture of a Ferris wheel. It has a diameter of 80 meters.

1. On the picture, draw and label a diameter.

2. How far does a rider travel in one complete rotation around the Ferris wheel?

Identify each measurement as the diameter, radius, or circumference of the circular object. Then, estimate the other two measurements for the circle.

1. The length of the minute hand on a clock is 5 inches.

2. The fence around a circular pool is 75 feet long.

3. The tires on a mining truck are 14 feet tall.

4. The distance from the tip of a slice of pizza to the crust is 7 inches.

5. Folding a tortilla in half creates a straight side 16 centimeters long.

6. The length of the metal rim around a glass lens is 190 millimeters.

A half circle is joined to an equilateral triangle with side lengths of 12 units. What is the perimeter of the resulting shape?

The figure shows a half circle and a triangle. The triangle is drawn adjacent and to the right of the half circle such that the dashed vertical base of the triangle is the diameter of the half circle.

Circle A has a diameter of 1 foot. Circle B has a circumference of 1 meter. Which circle is bigger? Explain your reasoning. (1 inch = 2.54 centimeters)

The circumference of Tyler's bike tire is 72 inches. What is the diameter of the tire?