Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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| 1. | The
distance around the edge or boundary of a circle is the:
a. | radius | c. | circumference | b. | diameter | d. | chord | | | | |
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| 2. | The
formula for the circumference, C, of a circle with diameter d is:
a. | C =
2d | b. | C = pd | c. | C = 2pd | | |
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| 3. | The
formula for the circumference, C, of a circle with radius r is:
a. | C =
2r | b. | C = pr | c. | C = 2pr | | |
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| 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 | | |
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| 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 | | | | |
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| 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?
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| 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 | | | | |
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| 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 | | | | |
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| 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 | | |
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| 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 | | | | |
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