Function to return the percentage increase in the volume of the cuboid
double increaseInVol ( double l , double b , double h ) { double percentInc = ( 1 + ( l / 100 ) ) * ( 1 + ( b / 100 ) ) * ( 1 + ( h / 100 ) ) ; percentInc -= 1 ; percentInc *= 100 ; return percentInc ; }