True/False
Indicate whether the
statement is true or false.
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1.
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The radius of a circle is twice the diameter of the circle.
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2.
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To calculate the radius of a circle, you can divide the diameter by 2.
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3.
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It is not necessary to title a circle graph.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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4.
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When creating a circle graph, you can use simple percents to represent degrees
of a circle. How many degrees would be represented by 45%?
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5.
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The graph below accurately shows how Miriam uses her computer time. If she
spends 21 h each week on her computer, how much of that time does she spend playing games?
 A) | 2.1 h | B) | 4.2 h | C) | 6.3 h | D) | 8.4
h |
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6.
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A small group that represents an entire population is called a
A) | data group | C) | sample | B) | representation | D) | simulation |
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7.
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Which one of the following words describes the distance around a circle?
A) | area | C) | diameter | B) | circumference | D) | radius |
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8.
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Which of the following calculations is the diameter of a circle equal to?
A) | double the radius of the circle | C) | half the circumference of the
circle | B) | half the area of the circle | D) | the circumference of the circle |
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9.
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Which one of the following options best represents the value of  ? A) | dependent on the radius | C) | exactly 3 | B) | equal to pi ( ) | D) | never the
same |
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10.
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The formula for finding the area of a circle is _____.
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11.
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The diameter of the bottom of a glass measures 4.8 cm. What is the approximate
area of the bottom of the glass, rounded to the nearest hundredth of a square centimetre?
A) | 15.07 cm2 | B) | 18.09 cm2 | C) | 30.14 cm2 | D) | 72.35
cm2 |
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12.
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Alexandra is buying a cover for her new pool. The diameter of the pool is 9 m.
Approximately how big should her pool cover be, rounded to the nearest square metre?
A) | 32 m2 | B) | 48 m2 | C) | 64 m2 | D) | 128
m2 |
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13.
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One sector of a circle graph covers 55% of the graph. What is the central angle
of this sector?
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Matching
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Match each statement with its corresponding term. A term may be used more
than once or not at all. A) | central angle | E) | pi ( ) | B) | circumference | F) | pie chart | C) | data | G) | radius | D) | diameter | H) | sector |
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14.
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the ratio of the circumference of a circle to its diameter
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Match each statement with its corresponding term. A term may be used more
than once or not at all. A) | area of a circle | D) | radius | B) | circumference of a
circle | E) | ratio | C) | diameter | F) | 360° |
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15.
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the sum of the central angles of a circle
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