Volumes Practice Test 1

Question : 34 of 40

Marks: +1, -0

If three equal cubes are placed adjacently in a row, then find the ratio of total surface area of the new cuboid to that sum of the surface areas of the three cubes.

1 : 3
2 : 3
5 : 9
7 : 9

Validate

Solution:

Required ratio =

{2(3a×a+a×a+a×3a)}/{3 ×6a^2}

{14a^2}/{18a^2}

= 7 : 9

Go to Question:

Prev Question

Next Question