Question

Four cubes, each of edge 5 cm are joined end to end. What is the total surface area of the resulting cuboid ?

Answer 1

length increase four times and become 20cm

whereas width and height of new formed cubiod is same.

Total surface area = 2(lb+bh+hl)

=2(20×5+5×5+5×20)

=2( 225)

=500