Question

Two cubes have their volume in the ratio 1 : 27. The ratio of their total surface areas is.... ​

Answer 1

Step-by-step explanation:

Let their sides be x &3x.

hence their volumes will be x^3:27x^3

=》1:27

tsa =6a^2

=》 6(x)^2:6(3x)^2

=》 6 : 54

= 1:9

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