AnswersECASD - Geometry A - CRArea of Composite Figures

Area of Composite Figures — Unit test Answers

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An oblique prism with a square base of edge length x units has a volume of x3 cubic units. Which expression represents the height of the prism?

Question illustration
A
x units
B
x units
Option B
C
2x units
D
x units
Option D
2
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A trapezoid, square, and semicircle are connected to form a composite figure. Trapezoid M D C K has base lengths of 8 millimeters and 4 millimeters. Square A B C D has side lengths of 2 millimeters. Line A B is the diameter of the semicircle and has a length of 4 millimeters.

Question illustration
A
(2π + 28) mm2
B
(2π + 32) mm2
C
(2π + 40) mm2
D
(2π + 48) mm2
3

An area reserved for a parking lot is 80 feet long and 77 feet wide. The stalls of the lot are at 90° angles to two one-way aisles. Each aisle is 80 feet by 10 feet. The three areas set aside for the parking spaces are congruent rectangles.

Question illustration
A
10
B
30
C
35
D
40
4

3 shapes are combined to form a composite figure. A semicircle is on the bottom, and then a small rectangle connects the semicircle to a triangle.

Question illustration
A
as three triangles and a circle
B
as two triangles, a rectangle, and a circle
C
as a triangle, a pentagon, and a semicircle
D
as a triangle, a rectangle, and a semicircle
5

If quadrilateral ABCD is an isosceles trapezoid, which statements must be true? Select three options

A
BC ∥ AD
B
BD ⊥ AC
C
BA ≅ CD
D
BE ≅ ED
E
∠CBA ≅ ∠BCD
6

Which statements are true? Select three options.

A
The population density for City B can be found using the ratio 48,592 : 26.
B
The population density for City D can be found using the ratio 258 : 196,429.
C
City A has the greatest population density of the four cities.
D
The population density of City B is greater than that of City C.
E
City D has the lowest population density of the four cities.
7

Trapezoid A B C D is shown. A diagonal is drawn from point B to point D. Sides B C and A D are parallel. Sides B A and C D are congruent. Angle C B D is 24 degrees and angle B A D is 116 degrees.

Question illustration
A
24°
B
40°
C
64°
D
92°
8

Which shape could be thought of as being created by stacking congruent polygons?

A
cone
B
rectangular prism
C
square pyramid
D
triangular pyramid
9

The volume of the triangular block is 4 cubic inches.

Question illustration
A
1.4 in.
B
2.0 in.
C
2.8 in.
D
3.5 in.
10

Every possible cross section of a three-dimensional figure is a circle. What is the figure?

A
cone
B
cylinder
C
circle
D
sphere
11

A circle is shown. 4 radii are drawn. Chords are drawn to connect the radii points on the circle to form 2 triangles. The triangles have base lengths of 6 centimeters and the other 2 sides have lengths of 5 centimeters. The distance between the base of the triangle to the outline of the circle is 1 centimeter. Everything around the triangles is shaded.

Question illustration
A
(25π – 48) cm2
B
(25π – 30) cm2
C
(25π – 24) cm2
D
(25π – 12) cm2
12

The right isosceles triangle shown is rotated about line k with the base forming perpendicular to k. The perimeter of the triangle is 58 units.

Question illustration
A
a cone with a base radius of 17 units
B
a cone with a base radius of 34 units
C
a cylinder with a base radius of 17 units
D
a cylinder with a base radius of 34 units
13

The right triangular prism has a volume of 1,152 cm3.

Question illustration
A
6
B
8
C
12
D
16
14

An oblique prism has a volume of 144 cubic units. The area of its base is 24 square units.What is the perpendicular height of the prism?

A
2 units
B
4 units
C
6 units
D
8 units
15

The seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area affected. The table shows the land area and seismic activity density.

Question illustration
A
State A had approximately 1,533 more earthquakes than State B.
B
State B had approximately 1,533 more earthquakes than State A.
C
State A had approximately 3,362 more earthquakes than State B.
D
State B had approximately 3,362 more earthquakes than State A.
16

Sofia cuts a piece of felt in the shape of a kite for an art project. The top two sides measure 20 cm each and the bottom two sides measure 13 cm each. One diagonal, EG, measures 24 cm.

Question illustration
A
5 cm
B
16 cm
C
21 cm
D
32 cm
17

Which three-dimensional figure has double the number of edges as faces?

A
rectangular prism
B
rectangular pyramid
C
triangular prism
D
triangular pyramid
18

A composite figure is comprised of a square, trapezoid, and a rectangle. The square has side lengths of 10 centimeters. The trapezoid has base lengths of 8 centimeters and 14 centimeters. The height of the trapezoid is 4 centimeters. The rectangle has side lengths of 20 centimeters and 6 centimeters.

Question illustration
A
262 cm2
B
264 cm2
C
266 cm2
D
268 cm2
19

The seismic activity density of a region is the ratio of the number of earthquakes during a given time span to the land area affected. A state had 424 earthquakes over a given time span and a land area of 71,300 square miles.What is the seismic activity density for this state? Round to the nearest ten thousandth, if necessary.

A
0.0046 earthquakes per square mile
B
0.0059 earthquakes per square mile
C
168.1604 earthquakes per square mile
D
179.0049 earthquakes per square mile
20

Kite FGHK is shown.

Question illustration
A
m=2
B
m=3
C
m=15
D
m=16

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