rectangle

h = 6"
l = 12"
w = 9"

Determine the area of the top of the rectangular prism:
square inches

Determine the area of the side of the rectangular prism:
square inches

Determine the area of the front of the rectangular prism:
square inches

what is the total surface area of the rectangular prism?:
square inches

Area of the top of the rectangular prism: 12" x 9" = 108 sq inches

Area of the side of the rectangular prism: 6" x 9" = 54 sq inches

Area of the front of the rectangular prism: 12" x 6" = 72 sq inches

Total surface area of the rectangular prism: 2(108) + 2(54) + 2(72) = 216 + 108 + 144 = 468 sq inches