Arectangular prism has the following dimensions. length: 18 inches width: 1 foot height: 14 inches if all the dimensions of this prism are tripled, what will be the surface area of the new figure?

Your answer is S = 11448 ft2

The formula for surface area of a rectangular prism is A = 2(wl + hl + hw)

plugging in the values, you get A = 2(12 x 3)(18 x 3) + (14 x 3)(18 x 3) + (14 x 3)(12 x 3)
A = 2(36)(54) + (42)(54) + (42)(36)

A = 11,448