Density and Design Problems — Unit test Answers

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A regular hexagon is shown.

Question illustration
A
4 in.
B
5 in.
C
9 in.
D
11 in.
2
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A semicircle with diameter 8 inches is connected to a triangle with a base length of 8 inches. The height of the triangle is 3 inches.

Question illustration
A
(8π + 6) in.2
B
(8π + 12) in.2
C
(8π + 18) in.2
D
(8π + 24) in.2
3

To find the area of parallelogram RSTU, Juan starts by drawing a rectangle around it. Each vertex of parallelogram RSTU is on a side of the rectangle he draws.

Question illustration
A
2 (18 + 4)
B
(18 + 4)
Option B
C
(18 + 4)
D
(18 - 4)
4

An interior angle of a regular polygon has a measure of 108°. What type of polygon is it?

A
pentagon
B
hexagon
C
octagon
D
nonagon
5

Triangle X Y Z is reflected over its hypotenuse to form kite X Y Z Y prime. Hypotenuse X Z has a length of 13, X Y is 5, and Y Z is 12.

Question illustration
A
4.6 units
B
5.4 units
C
8.0 units
D
9.2 units
6

On a coordinate plane, triangle R S T has points (negative 3, 2), (3, 2), and (negative 1, 1). An altitude is drawn from point T to point U at (negative 1, 2).

Question illustration
A
6 square units
B
9 square units
C
12 square units
D
18 square units
7

A regular hexagon has an apothem measuring 14 cm and an approximate perimeter of 96 cm.

Question illustration
A
224 cm2
B
336 cm2
C
448 cm2
D
672 cm2
8

Four interior angles of a pentagon measure 88°, 118°, 132°, and 100°. What is the measure of the fifth interior angle?

A
82°
B
92°
C
102°
D
112°
9

On a coordinate plane, 2 parallelograms are shown. Parallelogram 1 has points (0, 2), (2, 6), (6, 4), and (4, 0). Parallelogram 2 has points (2, 0), (4, negative 6), (2, negative 8), and (0, negative 2).

Question illustration
A
The area of parallelogram 1 is 4 square units greater than the area of parallelogram 2.
B
The area of parallelogram 1 is 2 square units greater than the area of parallelogram 2.
C
The area of parallelogram 1 is equal to the area of parallelogram 2.
D
The area of parallelogram 1 is 2 square units less than the area of parallelogram 2.
10

The table shows information about Town A in Illinois and Town B in Florida.

Question illustration
A
Town B has the same population as Town A.
B
Town B has a greater population than Town A.
C
Town B has a population of approximately 5,138.
D
Town B has a population of approximately 37,530.
11

On a coordinate plane, rhombus W X Y Z has points (negative 3, 1), (1, 4), (5, 1), and (1, negative 2).

Question illustration
A
16 units
B
20 units
C
24 units
D
28 units
12

What is the measure of each exterior angle of a regular hexagon?

A
40°
B
45°
C
60°
D
72°
13

Complete the steps, which describe how to find the area of the shaded portion of the circle.

Question illustration
A
length of the radius
B
length of the diameter
C
measure of the central angle
D
circumference of the circle
14

Galina is finding the area of triangle RST. To do so, she follows the steps in the table.Step 1Draw a rectangle around triangle RST.Step 2Find the area of the rectangle.Step 3Find the area of the three right triangles created by the sides of the rectangle and the intersection with each vertex of the triangle.Step 4Subtract the area of the right triangles from the area of the rectangle.

A
2 units by 4 units
B
3 units by 4 units
C
3 units by 5 units
D
4 units by 5 units
15

Which polygon is a convex heptagon?

A
A polygon has 7 sides. No angles go inside of the shape.
Option A
B
A polygon has 8 sides. No angles go inside of the shape.
Option B
C
A polygon has 8 sides. One angle goes inside of the shape.
Option C
D
A polygon has 7 sides. One angle goes inside of the shape.
Option D
16

A county in North Carolina spans 532 square miles. The population density of deer in the county is 11 deer per square mile.How many deer live in the county? Round to the nearest whole number, if necessary.

A
48 deer
B
68 deer
C
5,852 deer
D
5,992 deer
17

A composite figure is comprise of a semicircle, a hexagon, and a rectangle.

Question illustration
A
as a circle, two trapezoids, and a rectangle
B
as a semicircle, a pentagon, and two triangles
C
as a semicircle, a hexagon, and a rectangle
D
as a circle, six triangles, and a rectangle
18

Which statements about the octagon are true? Select two options.

A
The length of segment YZ is 15.3 cm.
B
The measure of the angle formed by the radius and the apothem is 30°.
C
The length of segment XY can be found by solving for a in 202 – 7.652 = a2.
D
The length of segment WZ is 20 cm.
E
The measure of the central angle, ∠ZXW, is 45°.
19

Henry and Liani have 200 feet of wood to frame a flower bed. Henry wants the bed to be a square, while Liani wants it to be a rectangle with dimensions of 55 feet and 45 feet.Which statement is true regarding the areas of the two flower beds?

A
Henry’s design would result in a larger flower bed because its area would be 2,500 square feet.
B
Liani’s design would result in a larger flower bed because its area would be 2,500 square feet.
C
Henry’s and Liani’s designs would result in flower beds with the same area.
D
Henry’s and Liani’s designs are not possible with the given amount of wood.

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