public class Test {
public static void main(String [] a){
Scanner scanner=new Scanner(System.in);
System.out.println("输入圆柱体底半径r:");
int rI=scanner.nextInt();
System.out.println("输入圆柱体高h:");
int hI=scanner.nextInt();
double vL=Math.PI*rI*rI*hI;
System.out.println(vL);
}
}
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