Question

A painter leans a 12-foot ladder against a house. The base of the ladder is
4 feet from the house. To the nearest tenth of a foot, how high on the
house does the ladder reach? Round to the nearest tenth. *

Answer 1

11.3 feet.

12 squared (144) minus 4 squared (16) is equal to 128. The square root of 128 is approximately 11.3.