Answers

2016-02-06T20:05:05+05:30
Let side of cube be a

Surface area = 6a^2
New side = a X 110/100 = 1.1a
New surface area = 6 X (1.1a)^2 = 6 X 1.21a^2 = 7.26a^2

Therefore, increase in area = 7.26a^2 - 6a^2 = 1.26a^2
Increase percentage = 1.26a^2/6a^2 X 100 = 21%



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