Question 147083
It is a right angled prism with rectangular base.
Total surface area = Sum of area of all 6 faces


The opposite faces of a rectangular prism are identical so it leaves to find the area of 3 non-opposite faces of the prism.


Total surface area = 2 x (Sum of area of all 3 non-opposite to each other faces)
Total surface area = 2 x (7x3 + 3x8 + 8x7) = 2 x (21 + 24 + 56) = 202 sq m