Question

UP THE LADDER

A man wafts to reach up a window 40 ft. from the ground. The distance from the foot of the ladder to the wall is 9 feet. How long should the ladder be?

Answer 1

This is an application of pythagoras theorem

Here dist. from ladder foot to wall=9ft
height of window=40ft

to find length of ladder, find length of hypotenuse

to find c square
the formula= a square+ b square

Here a=9ft, b=40ft
81+1600=1681

now this is in square unit, to convert to normal find its square root which of 1681= 41
Hence answer= 41ft