4 cubes are arranged in a row adjacent to each other. Find the ratio o
Right Answer is: C
Given, 4 cubes are arranged adjacently to each other.
Let the side of the cube be ‘a’.
Length of the cuboid obtained = 4a
Breadth of cuboid = a
Height of cuboid = a
Total surface area of cuboid = 2(l × b + b × h + l × h)
⇒Total surface area of cuboid = 2(4a2 + a2 + 4a2) = 18a2
Total surface area of the four cubes = 4 × (6a2) = 24a2
Ratio of the total surface area of the cuboid obtained to the sum of total surface area of each cube
= 18a2 : 24a2
= 3 : 4