a cube of side 5 cm is cut into 1 cm cubes the percentage increase in volume after such cutting is
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volume of 1 st cube =V1
Volume of 2nd cube =V2
Radius of 1st cube =a1=5cm
Radius of 2nd cube =a2=1cm
volume of first cube =a1³
.:V1=5×5×5=125cm³
volume of second cube=a2³
.:V2=1×1×1=1cm³
:.how much percentage decrease=1/125×100=5/4=1.25%
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