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- program hitung;
- uses crt;
- var
- segitiga,lingkaran:string;
- option,r,diameter,alas,tinggi:integer;
- jari_jari,luas:real;
- const
- phi=3.14;
- begin
- clrscr;
- writeln('hitung luas');
- writeln('1.segitiga');
- writeln('2.lingkaran');
- write('masukan pilihan(number) :');
- read(option);
- writeln('pilihan = ',option);
- if (option=1) then
- begin
- writeln('hitung luas segitiga');
- write('alas = ');
- read(alas);
- write('tinggi = ');
- read(tinggi);
- luas:=(alas*tinggi)/2;
- writeln('luas segitiga = ',luas:2:2);
- readln
- end
- else if (option=2) then
- begin
- writeln('luas lingkaran');
- writeln('phi = ',phi:2:2);
- write('diameter = ');
- read(diameter);
- jari_jari:=diameter/2;
- writeln('jari-jari = ',jari_jari:2:2);
- luas:=phi*sqr(jari_jari);
- writeln('luas lingkaran = ',luas:2:2);
- readln;
- end
- else
- write('pilihan salah');
- readln;
- readln;
- end.
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