title: Write a program that prompts the user for the radius of a sphere and prints its volume
body: <p>Im not getting correct answer with the following code below. Can anyone debug this code?
  When I input radius = 5, the answer I get is 500.000000 whereas the original answer should be 523.80952. Can anyone please explain what's wrong here?</p>
  
  <p>Sphere volume formula =4/3(π x r^3)</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  
  int main()
  
  
      {
      float radius = 0;
      float volume;
      float pie = 0;
  
      printf("Enter radius");
      scanf("%f", &amp;radius);
  
      pie = 22 / 7;
  
      volume = (4*pie*radius*radius*radius)/3;
      printf("the volume is %f", volume);
  
      return 0;
      }
  </code></pre>