Question

If x = 5 units, y = 18 units, and z = 3 units, then what is the surface area of the rectangular prism
i get 276 why is it wrong>

Answer 1

well why don't u use a very simple formula , like 2y(x+z) where y=height,x=length and z=breadth and i got answer 288

Answer 2

Surface area would be 2xy + 2xz + 2yz
Because the prism has 6 faces and surfance area is the area of all faces in this case. So just plug in your values. Answer should be 318