Question

The top of a ladder is leaning on a building at a point 12 feet above the ground.The bottom of the ladder is 5 feet from the base of the building. What is the length of the ladder?

Answer 1

13

Explanation:

using c^2 = a^2 + b^2

whereas c is the length of the ladder

a is the top of the ladder

b is the distance from building

so c^2 = 12^2 + 5^2 = 144 + 25 = 169

c = 13