[SOLVED] (Noob question) What next? (Circumference?)

[Roy766]

Um....I have no idea what to do....I want this program to figure out the circumference by inputing a diamter value in a box and getting an answer output. But what do I do now?

 

    <form>
    <input type="text" name="diameter"><br>
    <input type="submit" name="submit" value="Calculate!">
    </form><br>
    <?php
      $circumference = $_REQUEST['diameter'] * 3.14
      echo 'Circumference is '$circumference
    ?>

[Barand]

either

<?php
      $circumference = $_REQUEST['diameter'] * 3.14;
      echo 'Circumference is ' . $circumference;
?>

or

<?php
      $circumference = $_REQUEST['diameter'] * 3.14;
      echo 'Circumference is ' , $circumference;
?>

or

<?php
      $circumference = $_REQUEST['diameter'] * 3.14;
      echo "Circumference is $circumference";
?>

[Roy766]

THANK YOU!!!

 

Well, now I shouldn't have any problem with longer formulas!

 

Thanks!