First, How many sides does it have? Second, What do you do to find the area of a surface? (Square or rectangle) Third, Add up all of the sides.
1: 6
2: multiply the length and width (I am just doing the sides in a random order)
Top side: 5 x 5 = 25 Left side: 5 x 5 = 25 Right side: 6.4 x 5 = 32 Bottom side: 9 x 5 = 45 Front side: (14 x 5) divided by 2 = 35 Back side: (14 x 5) divided by 2 = 35