Question

A ladder is placed against the side of a house. the top of the ladder is 12 feet above the ground. the base of the ladder is 5 feet away from the house. find the length of the ladder.

Answer 1

The length of the ladder is 13 because: using the pythagorean theorem
a² + b² = c²
5² + 12² = c²
25+144 = 169
169 = c²
Then figure the square root of 169.
13 x 13 = 169
Hope this helps :)