Anneaubina Anneaubina

20-11-2020
Mathematics

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A 12-foot ladder is placed four feet from the base of a wall.
How far up the wall will the ladder reach?

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20-11-2020

Answer:8sqrt 2 or sqrt 128

Step-by-step explanation:

We can use the Pythagorean Theorem. Since the ladder is leaning against the wall, it is the hypotenuse. It is also 4 feet away from the wall so 12^2-4^2=b^2 b^2=128 so b=8sqrt 2 or sqrt 128.

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