Question 50
Five solid cubes, each of volume 238328 cm3, are joined end to end to form a cuboid. What is the lateral surface area (in cm2) of the cuboid?
Solution
A cube having a volume of 238328 cubic cm has a side of length 62 cm.
When 5 cubes are joined end to end, we get a cuboid of length = 62*5 = 310 cm, breadth = 62 cm and height = 62 cm.
The lateral surface area of a cuboid = 2*(l + b)*h
==> 2*(310 + 62)*62 = 46128 sq. cm.
