Answers

2016-02-14T09:46:58+05:30
Earlier surface area of the cube = 6(side)^2 = 6(4)^2 = 96cm^2 No. of new cubes = Volume of older cube / Volume of 1 new cube => 4*4*4/1*1*1 => 64 cubes Newer surface area of 64 cubes = 64*6(1)^2 = 384cm^2 Therefore, percentage increase => (384-96)*100/96 => 28800/96 = 300%
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