Q. 95.0( 1 Vote )

# Three equal cubes are placedadjacently in a row. Find the ratio of total surface area of the new cuboid to that of the sum of the surface areas of the three cubes.

Answer :

Given,

Let edge length of three equal cubes = a

Then,

Sum of surface area of 3 cubes =

When these cubes are placed in a row adjacently they form a cuboid.

Length of new cuboid formed = a+a+a = 3a

Breadth of cuboid = a

Height of cuboid = a

Total surface area of cuboid =

=

Hence,

=

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