The foot of the ladder is placed 7 meters from a wall. If the top of the ladder rests 9 meters up on the wall, how long is the ladder?
Patrick B.
answered 03/25/19
Math and computer tutor/teacher
Pythagorean says:
sqrt( 7^2 + 9^2) = sqrt( 49 + 91) = sqrt( 140) = sqrt( 2* 2 * 5 * 7) = 2 * sqrt(35) approximately 11.832
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