What's the surface area of a height of 8 length of 4 and width of 4

160ft^2 in other words, 160 ft squared

The surface area of a rectangular prism is the area of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.

The surface area is 8*4*4=128