Answer:
The surface area of the rectangular prism is 276.
Step-by-step explanation:
40 + 70 + 28 + 70 + 28 + 40 = 276
Every term added above represents the area of one side of the prism.
276
4x10=40x2=80
7x10=70x2=140
7x4=28x2=56
140+80+56=276
