| |
| |
1. |
A 14-foot ladder that is placed 5 feet from the base of the vertical rock wall just reaches the top of the entrance of the cave. How high is the cave entrance above the ground? |
| |
|
A. |
about 9 feet |
B. |
about 14.9 feet |
| |
|
C. |
about 6.2 feet |
D. |
about 13.1 feet |
| |
|
Hint |
|
| |
2. |
For safety reasons, the base of a 26-foot ladder should be at least 8 feet from the wall. How high can a 26-foot ladder safely reach? |
| |
|
A. |
about 24.7 feet |
B. |
about 27.2 feet |
| |
|
C. |
about 22.6 feet |
D. |
about 18 feet |
| |
|
Hint |
|
| |
3. |
A 15-foot ladder is placed against a house and reaches a second story window. The ladder's base is 9 feet from the house. How far above ground is the window? |
| |
|
A. |
13 feet |
B. |
6 feet |
| |
|
C. |
17.5 feet |
D. |
12 feet |
| |
|
Hint |
|
| |
4. |
Which of the following are Pythagorean triples? |
| |
|
A. |
9, 12, 15 |
B. |
6, 12, 13 |
| |
|
C. |
7, 9, 11 |
D. |
10, 12, 16 |
| |
|
Hint |
|
| |
5. |
The numbers 5, 12, and 13 form a Pythagorean triple. Which of the following is not a Pythagorean triple. |
| |
|
A. |
10, 24, 26 |
B. |
15, 36, 39 |
| |
|
C. |
15, 22, 23 |
D. |
20, 48, 52 |
| |
|
Hint |
|
|
|