AnswersFL-1205040-MJ Grade 7 Mathematics B -GFCircumference

Circumference Answers

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The circumference of a circle is feet. What is the length of the radius of this circle?

Question illustration
A
9 ft
B
18 ft
C
36 ft
D
72 ft
2
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Which statements are true about the circle shown below? Select two options.

Question illustration
A
The diameter is 31.4 centimeters.
B
The diameter is half the radius.
C
The circumference can be found by multiplying .
Option C
D
The circumference in terms of is .
Option D
E
The distance around the circle is approximately 98 centimeters.
3

A high school track is shaped as a rectangle with a half circle on either side. Jake plans on running four laps. How many meters will Jake run? Use 3.14 for .

Question illustration
A
301.9 m
B
823.6 m
C
1,207.6 m
D
1,647.2 m
4

Which statements are true about the circle shown below? Select three options.

Question illustration
A
The diameter is 8 cm and the radius is 16 cm.
B
The circumference of the circle in terms of is .
Option B
C
If is approximated to , the circumference of the circle is approximately 25.14 cm.
Option C
D
The circumference of the circle rounded to the nearest whole number is 20 cm.
E
If is approximated to 3.14, the circumference of the circle is 25.12 cm.
Option E
5

Which formula should be used to find the circumference of a circle?

A
C = pi d
Option A
B
C = 2 pi d
Option B
C
C = pi r
Option C
D
C = StartFraction pi over d EndFraction
Option D
6

A circular swimming pool has a radius of 15 ft. There is a path all the way around that pool that is three feet wide. What is the circumference of the outer edge of the path around the pool? Use 3.14 for .

Question illustration
A
56.52 ft
B
94.20 ft
C
113.04 ft
D
114.04 ft
7

What is the circumference of the circle? Use 3.14 for .

Question illustration
A
20.096 cm
B
40.192 cm
C
200.96 cm
D
401.92 cm
8

John is putting a fence around his garden that is shaped like a half circle and a rectangle. How much fencing will John need? Use for .

Question illustration
A
32 ft
B
39 ft
C
46 ft
D
57 ft
9

The circumference of a circle is inches. What is the length of the radius of this circle?

Question illustration
A
14 in.
B
21 in.
C
28 in.
D
56 in.
10

What is the circumference of the circle? Use 3.14 for .

Question illustration
A
51.81 cm
B
102.3 cm
C
103.62 cm
D
207.24 cm

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