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a 22 foot ladder is placed against a vertical wall of a building with the bottom of the ladder standing on level ground 16 feet from the base of the building. how high up the wall does the ladder reach

Sagot :

You need to work this out using pythagoras' theorem.

Csquared=Asquared+Bsquared

But you are finding out A, not C, so you must rearrange the equation.

Asquared=Csquared-Bsquared
Asquared= 484-256
Asquared=228
A=Square root of 228
A=15 :) 
Jionnaragoneidn
the correct answer to your questin is 38
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