Question

Three cubes of side 4 cm each are joined end to end to form a cuboid. The surface area of the resulting cuboid
and total surface area of the three cubes are in the respective ratio of_____. /

Answer 1

Length of the resulting cuboid 4+4+4=12cm

Height and breadth remain same as 4cm

Total surface area of a cuboid of length l, breadth b and height h.=2(l×b+b×h+l×h)

So, the total surface area of this cuboid =2(12×4+4×4+12×4)=224cm