a ladder is leaning against the wall.the top of ladder is 9 feetabove the ground .if the bottom of the ladder is moved 3 feet fartherfrom the wall,the ladder will belying flat on the ground,still touching the wall.how long,in feet,is the ladder?
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12 feet it will be correct answer
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By Pythagoras theorem
H^2=B^2+P^2
=9^2+3^2
=81+9
H^2 =90
H=√90
=3√10
H^2=B^2+P^2
=9^2+3^2
=81+9
H^2 =90
H=√90
=3√10
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