Can someone help me with this word problem.
How far up a wall will an 11m ladder reach, if the foot of the ladder must be 4m from the base of the wall? Round your answer to the nearest tenth.
algebra.math - Reiny, Thursday, November 1, 2007 at 11:47pm
The ladder will form a right-angled triangle with the wall, so use Pythagoras
x^2 + 4^2 = 11^2