Question

daniel is paint the wall and celling of cuboid wall with length, breadth and height of 15, 10, 7m respectively. from each can of paint 100m^2 area is painted. then how many cans will be meeded

Answer 1

Surface area of the area painted by daniel=2h(l+b)+lb
=350+150
=500 m^2

No.of cans needed = surface area to be painted /area painted by one can
=5cans