What is the perimeter of the shape below if 1 square is equal to 1 square foot

The base, b, of a two-dimensional figure can be any side. The height, h, is the measure of a perpendicular line segment from the base to the top of the figure. Area is the number of square units needed to cover a flat surface without gaps or overlaps. A square unit is a square that is 1 unit long and 1 unit wide. To find the area of a figure, count the number of square units inside the figure. im sure thats right . now 

Given: h= 15mreq'd: hypotenuse = ? sol'n: let < a =  ∅solving for the length of rope,sin a = 15/length of ropel = 15/sina