Question

the ratio of volumes of cubes is 1:27 then the ratio of their surface areas is.
give explanation.
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Answer 1

Not understanding your Q.

Answer 2

Answer:

Answer: C) 1:9

Step-by-step explanation:

Explanation:

Let their edges be a and b. Then,

a3/b3 = 1/27 (or) (a/b)3 = (1/3)3 (or) (a/b) = (1/3).

\Ratio of their surface area = 6a2/6b2 = a2/b2 = (a/b)2 = 1/9, i.e. 1:9.

Subject: Quantitative Aptitude - Arithmetic Ability