Question

an 18-foot ladder leans against the wall of a building. the base of the ladder is 9 feet from the bulding on level ground.how many feet up the wall,to the nearest tenth of a foot,is the ladder?
Ms. Sue
The ladder forms the hypotenuse of a right triangle. Solve for a

a^2 + b^2 = c^2
a^2 + 9^2 = 18^2
a^2 + 81 = 324
a^2 = 243
a = 15.589 = 15.6 feet

Related Questions

A 20-foot ladder leans against a wall so that the ladder’s angle of elevation is 46°. Find x, the di... A 20-foot ladder leans against a wall so that the ladder's angle of elevation is 46°. *. Find x, th... A 16-foot ladder leans against a wall so that the ladder’s angle of elevation is 55°. Find x, the di... Question A 16-foot ladder leans against a wall so that the ladder’s angle of elevation is 55°. Find...