The ladder needs to lean against the house at a height of 24 feet. How far should Cheri place the base of the ladder from her house?

Answer 1

We have to know the length of the ladder, suppose it is L ft
distance of base from wall --- x ft

x^2 + 24^2 = L^2
x^2 = L^2 - 576
x = √(L^2 - 576) = .....

once you plug in L, you can finish the calculation