AnswersMath 7 B M12 2526 S2Cross Sections

Cross Sections — Unit test Answers

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21
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What is the shape of the cross section of the figure that is parallel to the triangular bases?

Question illustration
A
a parallelogram that is not a rectangle
B
a rectangle
C
a triangle that must have the same dimensions as the bases
D
a triangle that may not have the same dimensions as the bases
22
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Which solid is a triangular prism?

A
mc010-1.jpg
Option A
B
mc010-2.jpg
Option B
C
mc010-3.jpg
Option C
D
mc010-4.jpg
Option D
23

Kievan bought a new eraser that came in a cardboard wrapper.What is the minimum amount of cardboard used for the wrapper?

Question illustration
A
38 centimeters squared
Option A
B
40 centimeters squared
Option B
C
76 centimeters squared
Option C
D
80 centimeters squared
Option D
24

Which expression represents the total surface area, in square meters, of the rectangular pyramid below?

Question illustration
A
(18.4) (27.6) + 2 ((18.4) (20.4)) + 2 ((27.6) (17.6))
Option A
B
(18.4) (27.6) + 2 ((18.4) (22.4)) + 2 ((27.6) (22.4))
Option B
C
(18.4) (27.6) + 2 (one-half (18.4) (20.4)) + 2 (one-half (27.6) (17.6))
Option C
D
(18.4) (27.6) + 2 (one-half (18.4) (22.4)) + 2 (one-half (27.6) (22.4))
Option D
25

Which equation should be used to find the volume of the figure?

Question illustration
A
V = one-third (6) (4) (8)
Option A
B
V = one-half (6) (4) (8)
Option B
C
V = one-third (6) (4) (10)
Option C
D
V = one-half (6) (4) (10)
Option D
26

Two triangular faces of a rectangular pyramid each have an area of 7.8 cm2 and the other two faces each have an area of 16.5 cm2. If the area of the base is 60 cm2, what is the total surface area of the pyramid?

A
84.3 cm2
B
108.6 cm2
C
157.2 cm2
D
168.6 cm2
27

How many bases does a rectangular prism have?

A
one
B
two
C
three
D
four
28

What is the volume of this rectangular prism?

Question illustration
A
30.75 cm
Option A
B
61.5 cm
Option B
C
147.6 cm
Option C
D
295.2 cm
Option D
29

Which solid has two rectangular bases and four lateral faces, each in the shape of a rectangle?

A
triangular prism
B
square pyramid
C
rectangular prism
D
rectangular pyramid
30

What does volume measure?

A
the amount of space occupied by a two-dimensional solid object
B
the total area of all the surfaces of a three-dimensional solid object
C
the amount of space inside the boundary of a two-dimensional object
D
the amount of space occupied by a three-dimensional solid object
31

What is the surface area of the triangular prism? [Not drawn to scale]

Question illustration
A
115 square feet
B
120 square feet
C
135 square feet
D
150 square feet
32

Valentina has a tray where she keeps all of her important papers. The tray is in the shape of a rectangular prism with no top.What is the volume of papers that the tray can hold?

Question illustration
A
160 inches cubed
Option A
B
180 inches cubed
Option B
C
280 inches cubed
Option C
D
300 inches cubed
Option D
33

Valentina has a tray where she keeps all of her important papers. The tray is in the shape of a rectangular prism with no top.What is the volume of papers that the tray can hold?

Question illustration
A
160 inches cubed
Option A
B
180 inches cubed
Option B
C
280 inches cubed
Option C
D
300 inches cubed
Option D
34

Each brick in the wall has the dimensions shown below.What is the volume of each brick?

Question illustration
A
59 inches cubed
Option A
B
72 inches cubed
Option B
C
118 inches cubed
Option C
D
144 inches cubed
Option D
35

Which equation can be used to find the volume of this solid?

Question illustration
A
V = StartFraction 7 + 6 over 2 EndFraction times 8
Option A
B
V = StartFraction 7 + 6 + 8 over 2 EndFraction
Option B
C
V = StartFraction 7 times 6 over 2 EndFraction times 8
Option C
D
V = StartFraction 7 times 6 over 2 EndFraction + 8
Option D
36

A rectangular pyramid has a volume of , a height of 12 in., and a base length of 21 in. What is the width of its base?

Question illustration
A
2 in.
B
6 in.
C
12 in.
D
18 in.
37

What is the surface area of the rectangular pyramid below?

Question illustration
A
29.99 m2
B
31.04 m2
C
41.74 m2
D
65.24 m2
38

What is the volume of this triangular prism?

Question illustration
A
182 m
Option A
B
195 m
Option B
C
210 m
Option C
D
390 m
Option D
39

Each brick in the wall has the dimensions shown below.What is the volume of each brick?

Question illustration
A
59 inches cubed
Option A
B
72 inches cubed
Option B
C
118 inches cubed
Option C
D
144 inches cubed
Option D
40

Which shows how to determine the volume of the pyramid?

Question illustration
A
V = one-third (12) (8) (10)
Option A
B
V = one-half (12) (10)
Option B
C
V = one-half (12) (8) (10)
Option C
D
V = One-third (12) (10)
Option D

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