text: #include <iostream>
  #include "ShapeArea.h"
  
  using namespace std;
  
  float areaCircle(float r) {
  	return (22 / 7.0 * r * r);
  }
  
  float areaReactangle(float l, float w) {
  	return (l * w);
  }
  
  float areaSquare(float l) {
  	return (l * l);
  }