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Saturday, December 14, 2019

If the volume of two cubes are in the ratio of 27 : 64, then the ratio of their total surface area is

If the volume of two cubes are in the ratio of 27 : 64, then the ratio of their total surface area is
A27 : 64
B3 : 4
C9 : 16
D3 : 8

Correct answer is:  9 : 16

Explanation:

(a1)3(a2)3=2764

a1a2=34

Ratio of their total surface area

=6a216a22=(a1a2)2

=(34)2=916=9:16

prasad
answered Dec 20 '2019 at 17:9

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