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Destinysills9325
30.11.2019 •
Mathematics
If a ladder which is 15 feet long is leaned against a house so that the bottom of the ladder is 5 feet from the house, how high up the house will the ladder reach?
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Ответ:
Use Pythagorean theorem to find the missing length.
a^2 + 5^2 = 15^2
a^2 + 25 = 225
Subtract 25 from both sides
a^2 = 200
Take the square root of each side
a = √200
a = 10√2 EXACT answer
a = 14.14 decimal approximation
Ответ: