An edge of cube is increased by 10%. Find the percentage by which the surface area of the cube has increased.
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imagine side of cube a=1 then total TSA =6×1×1=6 cmper square now after 10 percent increased side TSA =6×1.1×1.1= 7.26cmpersqure. total increased surface. 1.26×100÷6=21 percent. I think this will help u
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