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