To calculate the surface area of a triangular prism, you need to know the dimensions of the triangular base as well as the height (length) of the prism. The formula for the surface area is:
\[ \text{Surface Area} = bh + (Perimeter \times h) \]
Where:
- \( b \) is the base area of the triangle,
- \( h \) is the height (length) of the prism,
- \( Perimeter \) is the perimeter of the triangular base.
Without the specific dimensions of the prism, we cannot determine the surface area and which of the provided options (240, 390, 330, or 360 square yards) is correct.
If you can provide the base dimensions and the height of the prism, I would be happy to calculate it for you.