‡define P 3.1415
main()
{

	float r,a,c;
	clrscr();
	printf("\nEnter the radius :");
	scanf("%f",&r); 
	a=P*r*r;
	c=2*P*r;
	printf("\nArea of a circle: %0.2f",a);
	printf("\nCircumference of a circle : %0.2f",c);
	getch();
}

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