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| 1 | |
Which ratio in a circle is equal to p? |
| | A) | circumference:diameter |
| | B) | circumference:radius |
| | C) | diameter:radius |
| | D) | diameter:circumference |
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| 2 | |
The formula p × r2 is used to calculate |
| | A) | the ratio of the circumference to the diameter of a circle |
| | B) | the diameter of a circle |
| | C) | the circumference of a circle |
| | D) | the area of a circle |
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| 3 | |
While riding the carousel at Port Dalhousie, Jasmine estimated that her horse was 4 m from the centre. Find the circumference of the circle that was made by Jessie's horse as the carousel turned. |
| | A) | 12.6 m |
| | B) | 25.1 m |
| | C) | 50.3 m |
| | D) | 100.5 m |
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| 4 | |
About how many revolutions of the carousel must Jasmine ride to cover 100 m? |
| | A) | 3 |
| | B) | 4 |
| | C) | 5 |
| | D) | 6 |
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| 5 | |
Farouk wraps a measuring tape around a telephone pole and finds that the circumference was 180 cm. What is the radius of the pole? |
| | A) | 90 cm |
| | B) | 60 cm |
| | C) | 57.3 cm |
| | D) | 28.6 cm |
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| 6 | |
Farouk paints the top of the telephone pole in question 5 with protective paint. What is the area of the top? |
| | A) | 645 cm2 |
| | B) | 1289 cm2 |
| | C) | 2578 cm2 |
| | D) | 5157 cm2 |
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| 7 | |
Protective paint covers 30 000 cm2 per litre of paint. How much paint does Farouk need for the top of the telephone pole in question 6? |
| | A) | 86 mL |
| | B) | 172 mL |
| | C) | 196 mL |
| | D) | 86 L |
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| 8 | |
Jacquie wants to draw a circle through the three red dots in the diagram shown. She must use a centre at point:
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| | A) | A |
| | B) | B |
| | C) | C |
| | D) | D |
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| 9 | |
The radius needed for the circle in question 8 is |
| | A) | 1 square widths |
| | B) | 3 square widths |
| | C) | 4 square widths |
| | D) | 8 square widths |
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| 10 | |
Navid needs a circle of cloth 1 m in diameter for part of a costume. He cuts the circle from a square 1 m on a side. How much cloth was wasted?
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| | A) | 0.21 m2 |
| | B) | 0.25 m2 |
| | C) | 0.5 m2 |
| | D) | 0.89 m2 |
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