Write a C program to enter radius of a circle and find its diameter, circumference and area.

 

#include <stdio.h> int main() { float radius, diameter, circumference, area;

printf("Enter radius of circle: "); scanf("%f", &radius); diameter = 2 * radius; circumference = 2 * 3.14 * radius; area = 3.14 * (radius * radius);

printf("Diameter of circle = %.2f units \n", diameter); printf("Circumference of circle = %.2f units \n", circumference); printf("Area of circle = %.2f sq. units ", area); return 0; }