Name:    Try It Out -- Chapter 5, Lesson 3

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

1.

The distance around the edge or boundary of a circle is the:
 a. radius c. circumference b. diameter d. chord

2.

The formula for the circumference, C, of a circle with diameter d is:
 a. C = 2d b. C = pd c. C = 2pd

3.

The formula for the circumference, C, of a circle with radius r is:
 a. C = 2r b. C = pr c. C = 2pr

4.

Calculate the circumference of a circle that has a diameter of 5.3 cm.
 a. 16.6 cm b. 33.3 cm c. 16.7 cm

5.

Calculate the circumference of a circle that has a radius of 32.1 m
 a. 100.8 m c. 201.6 m b. 201.7 m d. 100.9 m

6.

A circular flower garden needs to have edging installed.  If the distance across the flower garden, through the centre is 25 m, how much edging is needed?
 a. 78 m b. 79 m c. 157 m

7.

The rectangular label that is glued to the outside of a can of paint has a length of 52 cm.  Determine the diameter of the can that will use this label. a. 16.6 cm c. 326.7 cm b. 163.4 cm d. 8.3 cm

8.

Tim’s car has tires with a radius of 28 cm.  The tire turns 320 times on his way to school.  How much will the odometer on his car change?
 a. 56 297 cm c. 0.1 km b. 0.3 km d. 0.6 km

9.

If the diameter of the large circle is 10 cm, what is the circumference of the smaller circle? {NOTE - add the center of the large circle to the diagram. The center of the large circle also lies on the circumference of the smaller circle.}
 a. 31.42 cm b. 7.85 cm c. 15.71 cm

10.

The diameter of a bicycle wheel is 64 cm.  About how many rotations will the wheel make over a distance of 50 m?
 a. 12 rotations c. 78 rotations b. 0.25 rotations d. 25 rotations