Function to find the change in hemispheric volume
static void new_vol ( double x ) { if ( x > 0 ) { Console . Write ( " % ▁ change ▁ in ▁ the ▁ " + " volume ▁ of ▁ the ▁ hemisphere : ▁ " + ( Math . Pow ( x , 3 ) / 10000 + 3 * x + ( 3 * Math . Pow ( x , 2 ) ) / 100 ) + " % " + " ▁ increase STRNEWLINE " ) ; } else if ( x < 0 ) { Console . Write ( " % ▁ change ▁ in ▁ the ▁ " + " volume ▁ of ▁ the ▁ hemisphere : ▁ " + ( Math . Pow ( x , 3 ) / 10000 + 3 * x + ( 3 * Math . Pow ( x , 2 ) ) / 100 ) + " % ▁ decrease STRNEWLINE " ) ; } else { Console . Write ( " Volume ▁ remains ▁ the ▁ same . " ) ; } }