The following code has been developed to calculate and print the area of a circle after asking the user for the value of the radius. Which one of the following statements can be used after scanf.
#include <stdio.h>
#define PI 3.1415
#define circleArea(r) (PI*r*r)
int main() {
int radius;
float area;
printf("Enter the radius: ");
scanf("%d", &radius);
area = circleArea(radius);
printf("Area = %.2f", area);
return 0;
}