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Answer:
Surface area of the triangular prism = 186.984 feet²
Step-by-step explanation:
Surface area of the triangular prism is given by the expression,
Surface area = (Perimeter of the triangular base)×Height + Area of the triangular bases
Perimeter of the triangular base = (9.8 + 8.5 + 6.2)
= 24.5 ft
Height of the prism = 5.5 ft
Area of the triangular base =
=
= 26.117 square feet
Surface area of the prism = (24.5 × 5.5) + (26.117 × 2)
= 134.75 + 52.234
= 186.984 square feet