A 25 foot ladder rests against a buliding. The base lf the ladder is 15 feet away from the base of the building. At what height does the ladder rest on the building (geometry, pythagorean theorem)

Question

Mathematics

Atticus

4 July, 17:23

A 25 foot ladder rests against a buliding. The base lf the ladder is 15 feet away from the base of the building. At what height does the ladder rest on the building (geometry, pythagorean theorem)

+1

Answers (1)

Know the Answer?

Mister · Answer 1

X^2+15^2=25^2

X^2+225=625

Isolate X

X^2=400

Take the square root on both sides

X=positive and negative 20 but in this case the negative is thrown out because you can't have a negative side

Answer: 20