Question

You are locked out of your house and the only open window is on the second floor, 20 feet above the ground. Your neighbor has a 42 foot ladder that you can borrow. About how far away from the base of the house do you need to place the ladder?

Answer 1

400 1764

equation: 20^2+42^2=x^2 (second option)
answer: 46.5 (last option)

(20)^2+(42)^2
=400 + 1764
=2,164
=46.5