#include
#define PI 3.14159f
int main(void)
{
float radius = 0.0f;
float diameter = 0.0f;
float circumference = 0.0f;
float area = 0.0f;
printf("Input the diameter of a table:");
scanf("%f", &diameter);
radius = diameter/2.0f;
circumference = 2.0f*PI*radius;
area = PI*radius*radius;
printf("\nThe circumference is %.2f", circumference);
printf("\nThe area is %.2f", area);
return 0;
}
Input the diameter of a table:123
The circumference is 386.42
The area is 11882.28