Find the ratio of the longest side to the perimeter of the right-triangular-shaped billboard. a scalene triangular billboard that says "ski whitetop" is designed to look like a snow-peaked mountain with a road leading up to the peak. the peak of the billboard is a right angle. the shorter side that is part of the right angle is labeled 5 feet. the longer side that is part of the right angle is labeled 12 feet. the third side of the billboard is labeled 13 feet. 5 feet 12 feet 13 feet