1.

a 25 m The long ladder rests against the wall. The wall is perpendicular to the ground. The lower end of the ladder is 7 m from the base of the wall on the ground. is on | If the top end of the ladder is 4 m on the wall. If it slides down, then by how much will the lower end of the ladder slide?

A. 9
B. 3
C. 7
D. 8
Answer» E.


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