# algebra.math

posted by .

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 -

The ladder will form a right-angled triangle with the wall, so use Pythagoras

x^2 + 4^2 = 11^2

etc

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