Answer:
float diameter =7.5;
float PI=3.14159265359 ;
// Calculating circumference and area of the circle
Step-by-step explanation:
Here we declared two variable diameter and PI of float type and assigning the value 7.5,3.14159265359 respectively after that we making a single line comment by using //(forward) slash.
#include<iostream> //header file
using namespace std; // namespace
int main() // main method
{
float diameter =7.5; // Assign the value 7.5 to diameter
float PI=3.14159265359 ;//Assign 3.14159265359 to PI
// Calculating circumference and area of the circle.
return(0);
}