Try again

VisualC++6.0
This is for a Calculate the area of a circle given the diameter.

Ok this is what I have so far;
#include<math.h>
voidmain(void)
{
pie,diameter,areais,sqrt(2);

cout<<"Enter Pie ";
cin>>Pie;
cout<< "Enter Diameter ";
cin>>diameter;
cout<< "Enter Area Is ";
cin>>areais;
cout<< "EnterSquare(2) ";
cin>>sqrt(2)

pie *4sqrt(2)/4


Do I have everything so far.

what are you tring to do here???

the area of a circle given its diameter is (PI*(D^2))/4

const float PI = 3.14159;

float dia, area;

int main(void)

{

cin >> dia;

area = PI* dia*dia/4;

cout << area;

return 0;

}