Kod


     <?php
    $promien = rand(0,1000);
    $poleKuli = (4/3)*pi()*pow($promien,3);
    $objetoscKuli = 4*pi()*pow($promien,2);
?>
<!DOCTYPE html>
<html lang="pl">
<head>
    <meta charset="UTF-8">
    <style>
        article, #promien, #kula{
            min-height: 200px;
            font-size: 1.5rem;
            text-align: center;
        }
        article{
            width: 50%;
            background-color: antiquewhite;
            color: black;
        }
        #promien{
            background-color: blue;
            color: aliceblue;
        }
        #kula{
            background-color: lightblue;
            color: black;
        }
    </style>
</head>
    <section id="promien"><?php echo "Promień: <br>".$promien; ?></section>
    <section style="min-height: 200px">
        <article style="float: left;"><?php echo "poleKuli: <br>".$poleKuli; ?></article>
        <article style="float: right;"><?php echo "objetoscKuli: <br>".$objetoscKuli; ?></article>
    </section>
    <section id="kula"><?php echo "kula"; ?></section>
</body>
</html>