Question

The bottom of a ladder must be placed 5 feet from the building. The ladder is 14 feet long. How far above the ground does the ladder touch the wall?

Answer 1

hi

If your wall is straight , then. you have a rectangular traingle.

As Pythagoras tells us : wall² = ladder²- ground distance²

wall² = 14²- 5²

wall² = 196 -25

wall² = √171≈13,07

Answer 2

3 square roots of 19

Explanation:

a squared + b squared = c squared

5 squared + b squared = 14 squared

25 + b squared = 196 squared

b squared = 171

b = square root of 171

b = 3 square roots of 19