The surface area of the box is cubic inches square inches o

The surface area of the box is _______ cubic inches, square inches, or inches?

The surface area of a rectangular box is given by the polynomial 2HL + 2LW + 2HW and is measured in square units. A rectangular box is to be constructed to hold a shipping material. The box is to have dimensions of 7 inches by 5 inches by 11 inches. Find the surface area of the box.

Solution

Surface area of a rectangular box = 2HL+2LW+2HW

we have given,

H= 11inches, L= 7 inches, W= 5 inches

hence S= 2*11*7 +2*7*5+2*11*5 = 334 square inches