Answer:
126 meters squared
Explanation:
To find the surface area
For the top and bottom it will be: l x w x 2(because there's a top and bottom)
3x6x2 = 36
For the sides (left and right) it will be: l x h x 2 (There's left and right)
3x5x2 = 30
For the front and back it will be w x h x 2 (There's the front and the back)
6x5x2 = 60
Added it all together and you get 126
The surface area is 126 meters squared