SOLUTION: An extendable ladder 9.8 feet long leans against a wall with the base 3 feet from the wall. Assuming the base of the ladder does not move, about how much higher will the top of the

Algebra ->  Pythagorean-theorem -> SOLUTION: An extendable ladder 9.8 feet long leans against a wall with the base 3 feet from the wall. Assuming the base of the ladder does not move, about how much higher will the top of the      Log On


   

Question 1134725: An extendable ladder 9.8 feet long leans against a wall with the base 3 feet from the wall. Assuming the base of the ladder does not move, about how much higher will the top of the ladder be above the ground when the ladder extended to twice its original length?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
y%5B1%5D, the first distance up the wall
y%5B2%5D, the extended distance up the wall


system%28y%5B1%5D=sqrt%289.8%5E2-9%29%2Cy%5B2%5D=sqrt%2819.6%5E2-9%29%29
and you want y%5B2%5D-y%5B1%5D.