Answer:
The answer is "[tex]\bold{240 ft^2}[/tex]"
Step-by-step explanation:
Please find the complete question in the attached file.
In the given question, the ramp shape of the triangular prism has 5 sides in which two sides were similar, and other four sides were different, that's why its surface area calculation can be defined as follows:
[tex]\to 5 \times 12= 60 \ ft^2 \\\\ \to 6 \times 13=78 \ ft^2 \\\\\to 5 \times 6=30 \ ft^2 \\\\\to 6 \times 12=72 \ ft^2 \\\\[/tex]
By adding the sides of the area its value is= [tex]\bold{240 ft^2}[/tex]
