Question

A 11​-foot ladder is leaning against a​ building, with the base of the ladder 3 feet from the building. How high up on the building will the top of the ladder​ reach?

Answer 1

10.58 feet

Explanation:

Use the Pythagorean theorem where 11 is the hypotenuse and 3 is a leg

a^2+b^2=c^2

3^2+b^2=11^2

9+b^2=121

b^2=112

b=10.58 feet