Aladder, with its foot in the street, makes an angle of 30 degrees with the street when its top rests on a building on one side of the street and makes an angle of 40 degrees with the street when its top rests on a building on the other side of the street. then there is a 10 ft wide sidewalk on each side of the street. if the ladder is 50 ft long, how wide is the street?
52ft
72ft
62ft
42ft