A 12-foot ladder is leaning against a wall. The bottom of the ladder is 5 feet away from the bottom of the wall. Approximately h
ow high up the wall does the top of the ladder reach? A. 2.4 feet B. 7.0 feet C. 13.0 feet D. 10.9 feet
2 answers:
The ladder is the hypotenuse.
One of the legs is 5 feet.
We need to find the height.
a^2 + 5^2 = 12^2
a^2 + 25 = 144
a^2 = 144 - 25
a^2 = 119
a = √119
a ≈ 10.9 feet
The ladder reaches up 10.9 feet.
D) 10.9
pythagorean theorem
144=25+x^2
10.9=x
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