To find the surface area of the prism, you need to add the areas of all its faces.
The prism has:
- Face A: 20 square units
- Face B: 16 square units
- Face C: 20 square units
- Opposite Face A: 20 square units
- Opposite Face B: 16 square units
- Opposite Face C: 20 square units
Now, let's add these areas together:
\[ \text{Total Surface Area} = \text{Area of Face A} + \text{Area of Face B} + \text{Area of Face C} + \text{Area of Opposite Face A} + \text{Area of Opposite Face B} + \text{Area of Opposite Face C} \]
Substituting in the values:
\[ \text{Total Surface Area} = 20 + 16 + 20 + 20 + 16 + 20 \]
Now, calculating it step by step:
\[ 20 + 16 = 36 \] \[ 36 + 20 = 56 \] \[ 56 + 20 = 76 \] \[ 76 + 16 = 92 \] \[ 92 + 20 = 112 \]
Thus, the surface area of the entire prism is 112 square units.