When length of each side of a cube is increased by 3cm, its volume is increased by 2457cm^3. Find its side. How much will the volume decrease, if length of each side of it is reduced by 20%.
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when each syd is increased by 3
volume = (a+3)^2=2457
=> a+3= 2457^(1÷3)
=> a+3 = 13.4
=> a= 10.4
if each syd is decreased by 20℅
volume decresed is
{(20÷100)× a}3
= 1÷125= 0.008 unit^3
volume = (a+3)^2=2457
=> a+3= 2457^(1÷3)
=> a+3 = 13.4
=> a= 10.4
if each syd is decreased by 20℅
volume decresed is
{(20÷100)× a}3
= 1÷125= 0.008 unit^3
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