#include<iostream.h>
#include<conio.h>
#include<math.h>
int main()
{
int jawab,nomer;
const float PHI = 3.14;
float phi, jari2, Luas, Keliling, sisi, miring,
alas, tinggi, panjang, lebar;
cout<<"tampilan pilihan
"<<endl;
cout<<".................................."<<endl;
cout<<endl;
cout<<"1.
Lingkaran"<<endl;
cout<<"2.
Persegi"<<endl;
cout<<"3.
Segitiga"<<endl;
cout<<"4. Persegi
panjang"<<endl;
cout<<"bangun yang akan
dihitung?";
cin>>nomer;
do
{
if
(nomer==1)
{
cout<<"Jari2 lingkaran (cm) = ";cin>>jari2;
Luas = PHI*jari2*jari2;
Keliling =2*PHI*jari2;
cout<<"Luas Lingkaran = "<<Luas<<endl;
cout<<"Keliling Lingkaran =
"<<Keliling<<endl;
}
else
if (nomer==2)
{
cout<<"sisi (cm)=
";cin>>sisi;
Luas=sisi*sisi;
Keliling=4*sisi;
cout<<"Luas Persegi =
"<<Luas<<endl;
cout<<"Keliling
Persegi = "<<Keliling<<endl;
}
else
if(nomer==3)
{
cout<<"alas (cm)= ";cin>>alas;
cout<<"tinggi (cm)=
";cin>>tinggi;
miring=sqrt(alas*alas+tinggi*tinggi);
Luas=0.5*(alas*tinggi);
Keliling=miring + alas + tinggi;
cout<<"Luas segitiga = "<<Luas<<endl;
cout<<"Keliling segitiga = "<<Keliling<<endl;
}
Else
{
cout<<"panjang (cm)=
";cin>>panjang;
cout<<"lebar (cm)= ";cin>>lebar;
Luas=panjang*lebar;
Keliling=2*(panjang+lebar);
cout<<"Luas
persegi panjang = "<<Luas<<endl;
cout<<"Keliling persegi panjang =
"<<Keliling<<endl;
}
}
while (jawab=='Y');
getch();
}
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