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An iron cube of size 10 cm is hammered into a rectangular sheet of thickness 0.5 cm. If the sides of the sheet be in the ratio 1 : 5, then the sides are
Let one side be k and other be 5k of the rectangular sheet.
Since cube [ of side a] is hammered into sheet, their volume remains same.
a^3 = Area*thickness
a^3 = length*breadth*thickness
10^3 = k*5k*0.5
k^2 = 400
k = 20 cm
One side is 20 cm and other is 100 cm.
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