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double op;. System.out.println(Введитечисло);. op = num.nextDouble();. System.out.println(ответ);. System.out.println(Math.rint(op));. doublezx;. double cv;. System.out.println(Введитедлинну);. cv = num.nextDouble();. d



//19

case 19:

double op;

System. out. println(" Введитечисло" );

op = num. nextDouble();

System. out. println(" ответ" );

System. out. println(Math. rint(op));

break;

//20

case 20:

doublezx;

double cv;

System. out. println(" Введитедлинну" );

cv = num. nextDouble();

double xc;

System. out. println(" Введитеширину" );

zx = num. nextDouble();

xc = cv * zx;

System. out. println(" ответ" );

System. out. println(xc);

break;

       //21

case 21:

doublebn;

doublevb;

System. out. println(" Введитедлинну" );

vb = num. nextDouble();

double kl;

System. out. println(" Введитеширину" );

bn = num. nextDouble();

kl = (bn + vb) * 2;

System. out. println(" ответ" );

System. out. println(kl);

break;

       //22

case 22:

doublesd;

doublefg;

System. out. println(" Введите сторну квадрата" );

fg = num. nextDouble();

sd = fg * 4;

System. out. println(" ответ" );

System. out. println(sd);

break;

           //23

case 23:

doublesz;

double dx;

System. out. println(" Введите сторну квадрата" );

sz = num. nextDouble();

dx = sz * sz;

System. out. println(" ответ" );

System. out. println(dx);

break;

       //24

case 24:

double fc;

doublegv;

doublejn;

System. out. println(" Введите 1 сторнутреугольника" );

fc = num. nextDouble();

System. out. println(" Введите 2 сторнутреугольника" );

gv = num. nextDouble();

System. out. println(" Введите 3 сторнутреугольника" );

jn = num. nextDouble();

doublehb;

hb = fc + gv + jn;

System. out. println(" ответ" );

System. out. println(hb);

break;

//25

case 25:

double km;

System. out. println(" Введитерадиус" );

km = num. nextDouble();

System. out. println(" ответ" );

System. out. println(Math. PI *(km*km));

break;

       //26

case 26:

double kmй;

System. out. println(" Введитедиаметр" );



  

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