document.write( "Question 93032: The base of a ladder is 14 feet away from the wall. The top of the ladder is 17 feet from the floor. Find the length of the ladder to the nearest thousandth. \n" ); document.write( "
Algebra.Com's Answer #67706 by bucky(2189)![]() ![]() ![]() You can put this solution on YOUR website! This is a Pythagorean theorem problem, because a right triangle is formed. \n" ); document.write( ". \n" ); document.write( "The wall is presumed to be perpendicular to the floor. When you lean a ladder against \n" ); document.write( "the wall, the ladder is opposite the right angle formed by the wall and the floor. Therefore, \n" ); document.write( "the ladder is the hypotenuse of the triangle. \n" ); document.write( ". \n" ); document.write( "The distance measured from the intersection of the floor and the wall and up the wall to \n" ); document.write( "the point where the ladder touches the wall (given as 17 ft) is one leg of the right \n" ); document.write( "triangle. \n" ); document.write( ". \n" ); document.write( "And the distance measured from the intersection of the floor and the wall and along the \n" ); document.write( "floor to the point where the ladder rests on the floor (given as 14 ft) is the other leg \n" ); document.write( "of the right triangle. \n" ); document.write( ". \n" ); document.write( "The Pythagorean theorem says that if you square the two legs and add these squares, \n" ); document.write( "the result is equal to the square of the hypotenuse. (Don't forget, the hypotenuse \n" ); document.write( "is the length of the ladder. Call it L.) \n" ); document.write( ". \n" ); document.write( "In equation form this becomes: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Doing the squares of the numbers makes the equation: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "adding the numbers on the left side: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Solve for L by taking the square root of both sides to get: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Rounding to the nearest thousandth results in the length of the ladder being 22.023 feet. \n" ); document.write( ". \n" ); document.write( "Hope this helps you to work your way through the problem. I presume you are allowed to \n" ); document.write( "use a calculator to find the square root of 485 ... \n" ); document.write( ". \n" ); document.write( " |