A ladder 14 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 9 feet from the base of the wall. If the top of the ladder slips down 1 feet, how many feet will the bottom of the ladder slip?
Choose the correct option.
A) 4  B) 10  C) 18  D) 19  E) 25
14^2-9^2=115   it means that the height is equal to 10.72.   since the top of the ladder slips down 1 feet, then the height of the wall =10.72-1= 
<gadget id="calculator">10.72-1</gadget>
<output>9.72</output>
9.72   the bottom=sqrt(14^2-9.72^2)=sqrt(196-94.47)=10.07~=10   ans is 10
<result>B</result>
A ladder 14 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 9 feet from the base of the wall. If the top of the ladder slips down 1 feet, how many feet will the bottom of the ladder slip?