Answer:
A = 62x^2
Step-by-step explanation:
This rect. prism has 6 faces, stemming from two each of the areas of the top, the end and the side of the prism.
top surface area: (2x)(3x) = 6x^2
end surface area: (2x)(5x) = 10x^2
side surface area: (3x)(5x) = 15x^2
Total surface area: A = 2(6x^2 + 10x^2 + 15x^2)
or: A = 2(31x^2) = 62x^2
