Question

Jeff places a 13 ft ladder against a wall. The base of the ladder is 5 ft from the wall. How high on the wall does the ladder reach?

Answer 1

Answer: 12 feet

Work Shown:

`a^2+b^2 = c^2\\\\5^2+b^2 = 13^2\\\\25+b^2 = 169\\\\b^2 = 169-25\\\\b^2 = 144\\\\b = √(144)\\\\b = 12\\\\`

I used the pythagorean theorem.