#include <stdio.h>
#define PI 3.14159265
int main(int argc, const char * argv[])
{
// insert code here...
// printf("Hello, World!\n");
float radius, diameter, area, circumference;
printf("\n Enter the diameter of the circle\n");
radius=diameter/2.0;
circumference= 2.0*PI*radius;
area=PI*(radius)*(radius);
printf("\n The area of the circle is: %.2f\n", area
); printf("\n The circumference of the circle is: %.2f\n", circumference
);
return 0;
}
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