How long a ladder must you have to reach the top of a 15-foot wall if the bottom of the ladder is placed 4 feet from the base of the wall? Round to the nearest tenth of a foot

Answer 1

Draw a figure.

The length of the ladder is the hypotenuse of a triangle with legs of 15 and 4.

c² = 15² + 4² = 241

rounded to nearest 10th c = 15.5