Based on the calculations, the surface area of this ramp is equal to 180 ft².
How to calculate the surface area?
In order to determine the surface area of the ramp, we would find the area of each geometric shape that makes up the triangular prism and then add them together.
Mathematically, the surface area of this ramp is given by:
Surface area = ah + aw + al
Substituting the given parameters into the formula, we have;
Surface area = (6 × 5) + (6 × 13) + (6 × 12)
Surface area = 30 + 78 + 72
Surface area = 180 ft².
Read more on triangular prism here: https://brainly.com/question/21173224
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