The lenght and breadth of a rectangle and radius of a circle are input through the keyboard . write a program to calculate the area and perimeter of the rectangle and the area and circumference of the circle.
// program to calculate area of rectangle and circle. # include <stdio.h> int main (){ int l , b , r ; float rectangle , circle , area , perimeter , circumference ; printf ( "Enter the lenght , breadth:\n " ); scanf ( "%d%d" , & l , & b ); rectangle = l * b ; perimeter = 2 * ( l + b ); printf ( "The Area of reactangle is %f and\n perimeter of rectangle is %f\n" , rectangle , perimeter ); printf ( "Enter the Radius of the circle:\n" ); scanf ( "%d" , & r ); circle = 3.14 * r * r ; circumference = 2 * 3.14 * r ; printf ( "The Area of circle is %f and \nthe circumference of circle is %f" , circle , circumference ); return 0 ; } /*output*/ Enter the lenght , breadth: 2 3 The Area of reactangle is 6.000000 and perimeter of rectangle is 10.000000 Enter the Radius of the circle...