Question

The base of the ladder is 7 feet from the building. The ladder is 1 foot longer than the height it reaches on the building. What is the length of the ladder?

Answer 1

By the Pythagorean theorem:

$x= \sqrt{7^2+6^2}= \sqrt{49+36}= \sqrt{85} \approx 9.22 \ \text{ft}$