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3D Applications of Pythagorean Theorem

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

What is the distance between the sailboat and the top of the lighthouse? (Round to the nearest tenth).

a)

205m

b)

181.7

c)

33025m

d)

5m

2.

The dimensions of a flatscreen television are 15 in and 20 in. What is the length of the diagonal across the TV?

a)

√144in

b)

√125 in

c)

25in

d)

35in

3.

What is the distance between the person and the top of the tree?

a)

1000ft

b)

100ft

c)

42.7ft

d)

31.6ft

4.

A baseball "diamond" is actually a square with sides of 90 feet. If a runner tries to steal second base, how far must the catcher, at home plate, throw to get the runner "out"? (Distance across the diagonal)

a)

180 feet

b)

90 feet

c)

13.4 feet

d)

127.3 feet

5.

The diagram below shows a telephone pole supported by a guide wire. The telephone pole is 40 feet tall and the bottom of the guide wire is 12 feet from the base of the pole.  

How long is the guide wire?

Nearest tenth

6.

Find h (hint: it is NOT 60 ft!)

7.

During a recent storm, a tree was blown over. The top of the tree landed 18 feet from the bottom of the tree.  

Which is the closest to the original height of the tree?

Nearest whole number

8.

Betsy has raised a flag on a 91-foot-high flag pole. The flag pole is supported by 5 wires, each of which is attached to the flag pole at a place that is 19 feet from the top of the pole and attached to the ground at a place that is 54 feet from the base of the pole. Find the total length of all 5 wires.

a)

450 feet

b)

225 feet

c)

338 feet

d)

90 feet

9.

Find the area of the missing square off of leg A if the area of one square is 369 and the area of another is 81?

a)

21.2

b)

17

c)

450

d)

288

10.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

10.1

b)

11.18

c)

7.8

d)

3.93

11.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

8

b)

9

c)

7

d)

10

12.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

3.4

b)

6.3

c)

.8

d)

1.4

13.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

12.5

b)

9.85

c)

10.95

d)

5.65

14.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

9.3

b)

10.3

c)

9.7

d)

8.7

15.

Find the missing diagonal length of the 3 dimensional figure. Approximate your answers.

a)

3.3

b)

2.7

c)

.9

d)

14.3

16.

Ashley is building a garden and she wants it to be 40' long. She knows that the diagonal measure of the plot is 50'. What is the width?

a)

30 feet

b)

50 feet

c)

40 feet

d)

20 feet

17.

A rectangular field is 50 yards wide and 100 yards long. Patrick walks diagonally across the field. How far does he walk?

a)

111.8 yards

b)

115 yards

c)

127.3 yards

d)

119 yards

18.

You need a ladder that will reach up a 25 foot tall house when placed 10 feet away from the house. How tall does the ladder need to be?

a)

25 feet

b)

26 feet

c)

27 feet

d)

28 feet

19.

What is the length of the pencil in the cylinder if the height is 12 inches and the diameter of the base is 10 inches?

a)

15.6 in.

b)

6.6 in.

c)

44 in.

d)

16 in.

20.

Find the length of the slant height for edge AV. (HINT:The altitude height of the pyramid is 12 meters.)

a)

10.9

b)

119\sqrt{119}

c)

13

d)

169