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# The Number Pi $(pi)$ (Grade 8)

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## The Number Pi $(pi)$

1.
$pi$ is a real number.
1. True
2. False

2.
$pi$ is a rational number.
1. True
2. False
3.
$pi >= 4$
1. True
2. False

4.
$pi<3$
1. True
2. False
5.
Which of the following is the best estimation of the value of $pi$?
1. 3
2. 4
3. 5
4. 6

6.
Pi is the ratio of a circle's                         to its                        .
1. area; diameter
3. area; circumference
4. circumference; diameter
7.
Pi $(pi)$ is used when calculating which of the following?
1. area of a circle
2. volume of a sphere
3. volume of a cylinder
4. volume of a cone
5. all of the above

8.
Pi $(pi)$ has a(n)                   number of decimal digits and these decimal digits                   repeating pattern.
1. finite; have no
2. finite; have a
3. infinite; have no
4. infinite; have a
9.
Which of the following fractions most closely approximates the value of $pi$?
1. $7/21$
2. $7/22$
3. $21/7$
4. $22/7$

10.
Pi day is celebrated on
1. February 13.
2. February 14.
3. March 13.
4. March 14.
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