Question

A 15-foot ladder leans against a building. The base of the ladder is

8 feet from the building.
How far up the building wall does the ladder touch? (Round your
answer to the nearest tenth.)

Answer 1

Explanation:

Using Pythagoras theorem

`{x }^(2) = {15}^(2) - {8}^(2) \ \\ {x}^(2) = 225 - 64 \\ {x}^(2) = 161 \\ x = √(161) \\ x = 12.69 \\ x = 12.7{ nearest \: tenth}`