194 ft. squared
To calculate the surface area of a rectangular prism, you need to find the areas of all six faces and sum them up.
The first face (6 ft x 8 ft) = 48 ft²
The second face (6 ft x 3.5 ft) = 21 ft²
The third face (6 ft x 8 ft) = 48 ft²
The fourth face (6 ft x 3.5 ft) = 21 ft²
The fifth face (8 ft x 3.5 ft) = 28 ft²
The sixth face (8 ft x 3.5 ft) = 28 ft²
Adding them all up: 48 + 21 + 48 + 21 + 28 + 28 = 194 ft²
Therefore, the surface area of this prism is 194 ft².