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A 12-ft ladder is leaning against a building. The bottom of the ladder is 7 ft from the building. How high is the top of the ladder?

A 12-ft ladder is leaning against a building. The bottom of the ladder is 7 ft from the building. How high is the top of the ladder?
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5 votes
A 12-ft ladder is leaning against a building. The bottom of the ladder is 7 ft from the building. How high is the top of the ladder?

User Paquita
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7.3k points

2 Answers

2 votes
Approximately 9.75 feet tall
User Varinder Sohal
by
7.8k points
3 votes
Pythagorean theorem:

√(12²-7²=A²)

9.75 feet = A

A being the height of the building aka where the top of the ladder is
User Michele Carino
by
7.9k points
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