A rectangular prism has 2 ends and 4 sides. Opposite sides have the same area. The surface area is the sum of the areas of all six sides.

Therefore, you need to get the area of the two sides, two adjacent sides and two ends and sum it all.

Area of 2 sides = (Length * Height) * 2

= (8)(6)(2)

= 96

Area of adjacent sides = (Width * Height ) * 2

= (7)(6)(2)

= 84

Area of ends = (Length * Width) * 2

= (8)(7)(2)

= 112

Add the three areas together to find the surface are

S.A = 292

292