The surface area is the prism is 108mm2.
Hi!
First, you have to add the addition equation.
(4 + 12) = 4 + 12 = 16
Now, the equation will look like this:
2.3 x 16
Now, you just take this equation like normal:
2.3 x 16 = 36.8
Answer:
The total change is 
Step-by-step explanation: