3 years ago

8. An 18-foot ladder is placed 5 feet from a wall. How far up the wall does the ladder reach?

Mathematics

2 answers:

svetoff [14.1K]3 years ago

3 0

Answer: is it 13 feet up?

Naddik [55]3 years ago

3 0

Answer:

about 17.29 feet

Step-by-step explanation:

Draw a diagram of the problem, it'll help you "see" the solution easier.

Basically, you have a right-triangle so you can apply Pythagorean theorem:

Let h = height the ladder reaches

h^2 + 5^2 = 18^2

h^2 = 18^2 - 5^2

h^2 = 324 - 25

h^2 = 299

h = sqrt(299)

h = 17.29 feet

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