A toy truck ic compromise of a rectangular cab and a shipping container that it is carrying. What is the total surface area of the truck excluding the wheels. 11in long,3in wide , 6 in height is the cab, 2in height 3in wide front
and back walls of the container, and 8in long, 4in wide and 3in high are the sides and bottom of the container.
Surface area of the cab = 2(lh+wh)+lw
= 2(11x6+3x6)+11x3
= 396
Surface area of the container = 2(lw+lh)+2(lh+wh)+lw
= 2(8x4+8x3)+2(8x2+4x3)+4x8
= 112
Total surface area of the truck = Surface area of cab + Surface area of container
= 396 + 112
= 508 square inches
Therefore, the total surface area of the truck excluding wheels is 508 square inches.