Question

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If each side of a cube is increased by 50%, find the percentage increase in its surface area.​

Answer 1

let each side be 100

then,increased size= 100+50%×100=15

previous surface area = 6×100^2=6×10000=60000

increased surface area = 6×150^2=22500×6=135000

increase=135000-60000=75000

increase %= 75000÷60000×100=125%