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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