Total surface area of a cuboid of length l, breadth b and height h is 2(lb+bh+lh).
What is the surface area of the cuboidal box which is open at the top, if: l= length of the cuboid, b= breadth of the cuboid and h= height of the cuboid
The surface area of a box which is in the form of a cuboid whose dimensions are l × b × h is__________.