Area of Triangles Versatiles
A
B
D
G
C
13.5
H
595
Name _________________________________
TM
D
4.5
I
C
E
43.2
J
B
F
A
17
K
10.6
L
10
38.95
Work each problem in the space provided. Match the answer to an answer in the box above. Place the
“number” tile in the appropriate “letter” space in the versatiles pack. Your teacher will check your work
when done.
1.
An equilateral triangle is shown. What is the area of the triangle?
9.5 cm
9.5 cm
8.2 cm
9.5 cm
The triangle shows a section of the wall that Sharon painted in her doll house. What is the area of
the wall she painted?
10.8 cm
2.
13.4 cm
8 cm
Darryl has a small herb garden. A sketch of his garden is shown below. How many square inches
does Darryl have to plant herbs?
in.
28 in.
3.
in.
Property of Cy-Fair ISD Middle School Math Dept. (361)
in.
Name _________________________________
4.
5.
What is the area of the triangle in the graph below?
An aquarium is in the shape of a triangular prism. Tanner wants to cover the bottom of the tank
with gravel. What is the area that Tanner needs to cover with gravel?
in.
in.
in.
6 in.
6.
Sergio has a container that is shaped like a triangular prism as shown below.
2m
2.25 m
5.5 m
What is the combined area of both bases of the container?
Property of Cy-Fair ISD Middle School Math Dept. (361)
Name _________________________________
7.
Lucia’s sailboat has a triangular sail that is made of 187 square feet of weatherproof fabric. The
height of the sail is 22 feet. What is the length of the base of the sail?
8.
The side view of a sail on a boat is shown below. The base of the sail is 28 feet long, and the area
of the sail is 148.4 square feet. What is h, the height of the sail?
h
28 feet
9.
Two students were asked to show their work for finding the area of the shape below.
9.8 m
9.8 m
Doug’s Work
1
A  bh
2
1
A  (8.6)(9.8)
2
A  42.14
Edith’s Work
1
A  bh
2
1
A  (8.6)(8.8)
2
A  37.84
Whose work is correct?
10.
A.
Both students are correct.
C.
Edith is correct.
B.
Doug is correct.
D.
Neither student is correct.
Which equation can be used to find the area of the triangle shown?
A.
B.
1
A = (8)(7)
2
C.
1
A = (8)(13)
2
D.
Property of Cy-Fair ISD Middle School Math Dept. (361)
1
A = (8)(6)
2
1
A = (7)(6)
2
13 cm
8 cm
6 cm
7 cm
Name _________________________________
11.
Which of the following is a true statement about the two figures below?
A. The area of the triangle is twice the area of the parallelogram.
B. The area of the parallelogram is half the area of the triangle.
C. The area of the parallelogram is equal to the area of the triangle.
D. The area of the parallelogram is twice the area of the triangle.
12 cm
12 cm
9 cm
9 cm
12.
Robert drew the figure shown below.
Which equation can be used to determine A, the area of the unshaded part of the figure in square
inches?
A.
A
1
(6  8)  (3  4)
2
C.
A
1
1
(6  8)  (3  4)
2
2
B.
A
1
1
(6  8)  (3  4)
2
2
D.
A
1
(6  8)  (3  4)
2
Property of Cy-Fair ISD Middle School Math Dept. (361)