AnswersFL-1205040-MJ Grade 7 Mathematics B -GFUnit Test

Unit Test — Unit test Answers

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The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

A
C = pi times 2
Option A
B
C = pi times 4
Option B
C
C = StartFraction pi times 4 over 2 EndFraction
Option C
D
C = StartFraction pi times 4 over 4 EndFraction
Option D
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A composite figure has a radius of 10 cm. What is the area of this composite figure? Use 3.14 for .

Question illustration
A
23.55 centimeters squared
Option A
B
78.5 centimeters squared
Option B
C
235.5 centimeters squared
Option C
D
314 centimeters squared
Option D
23

Two angles in a triangle measure and . What is the measure of the third angle?

Question illustration
A
35 degrees
Option A
B
55 degrees
Option B
C
145 degrees
Option C
D
215 degrees
Option D
24

A road bike has a wheel diameter of 622 mm. What is the circumference of the wheel? Use 3.14 for .

Question illustration
A
976.24 mm
B
976.54 mm
C
1,852.08 mm
D
1,953.08 mm
25

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.
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29

What is the measure of ?

Question illustration
A
41°
B
49°
C
51°
D
61°
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31

Tinh has a triangle with side lengths 12 mm, 15 mm, and 18 mm. He wants to reduce the triangle by one-third, so he divides each side length and each angle measure by 3. Which describes Tinh’s reduction?

A
Tinh’s reduction is incorrect; he should have only divided the side lengths by 3.
B
Tinh’s reduction is incorrect; he should have only divided the angle measures by 3.
C
Tinh’s reduction is incorrect; he should have multiplied the side lengths by 3 instead.
D
Tinh’s reduction is incorrect; he should have multiplied the angle measures by 3 instead.
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A circle has a diameter of 4 inches. Which statement about the area and circumference of the circle is true?

A
A comparison of the area and circumference of the circle is not possible because there is not enough information to find both.
B
The numerical values of the circumference and area are equal.
C
The numerical value of the circumference is greater than the numerical value of the area.
D
The numerical value of the circumference is less than the numerical value of the area.
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