Answer:
Option (3)
Step-by-step explanation:
The ramp shown in the figure is in the shape of a triangular prism.
Therefore, total surface area of this ramp = Area of the triangular sides + Area of the base + Area of the vertical side + Area of the slanting side
Area of the triangular sides = [tex]2[\frac{1}{2}(Base)\times (h)][/tex]
                       = bh
                       = 4×3
                       = 12 square feet
Area of the rectangular base = Length × Width
                        = 4 × 8
                        = 32 square feet
Area of the vertical side = Length × Width
                    = 3 × 8
                    = 24 square feet
Area of the slanting side = Length × width
                     = 8×5
                     = 40 square feet
Total surface area = 12 + 32 + 24 + 40
               = 108 square feet
Option (3) will be the answer.
