I need help ASAP!! Please explain how to solve the problem

I Need Help ASAP Please Explain How To Solve The Problem class=

Answer :

Answer:

Surface area=114 cm^2

Step-by-step explanation:

Surface area of a cuboid is given be 2(lb+bh+lh). ATQ, l=3, h=3, b=8. Plugging them into the formula, we will get surface area=114 cm^2