An aquarium is in the form of a cuboid whose external measures are 80cm×30cm×40cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?
The correct option is C. 8000cm2
Area of paper required = area of base + 2 area of side + area of back
=(80×30)+2(30×40)+(80×40)
=2400+2400+3200