diff --git a/calc.php b/calc.php
new file mode 100644
index 0000000..0a764e9
--- /dev/null
+++ b/calc.php
@@ -0,0 +1,101 @@
+<!DOCTYPE html>
+<html lang="pl">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+<link rel="stylesheet" href="brala.css">
+</head>
+<body>
+<?php
+if(isSet($_POST['walec'])) {
+    echo "<form method='post'>
+    <fieldset>
+    <legend>dane do walca</legend>
+    wysokość H =  <input type='text' name='h'><br>
+    promień r = <input type='text' name='r'><br>
+    <input type='submit' value='oblicz' name='walec'>
+    </fieldset>
+    </form>";
+}
+if(isSet($_POST['w']))  {
+    $h = $_POST['h'];
+    $r = $_POST['r'];
+    $poleW = 2*M_PI*$r*$r+2*M_PI*$r*$h;
+    $obW = M_PI*$r*$r*$h;
+    setcookie("poleW",$poleW,time()+60,"/");
+    setcookie("obW",$obW,time()+60,"/");
+    setcookie("hw",$h,time()+60,"/");
+    setcookie("rw",$r,time()+60,"/");
+    header("Location: brala.php");
+}
+
+if(isSet($_POST['stozek'])) {
+    echo "<form method='post'>
+    <fieldset>
+        <legend>dane do stożka</legend>
+        wysokość H =  <input type='text' name='h'><br>
+        promień r = <input type='text' name='r'><br>
+        bok l = <input type='text' name='l'><br>
+        <input type='submit' value='oblicz' name='s'>
+    </fieldset>
+    </form>";
+}
+if(isSet($_POST['s']))  {
+    $h = $_POST['h'];
+    $r = $_POST['r'];
+    $l = $_POST['l'];
+    $poleS = M_PI*$r*$r+M_PI*$r*$l;
+    $obS = 1/3*M_PI*$r*$r*$h;
+    setcookie("poleS",$poleS,time()+60,"/");
+    setcookie("obS",$obS,time()+60,"/");
+    setcookie("hs",$h,time()+60,"/");
+    setcookie("rs",$r,time()+60,"/");
+    setcookie("ls",$r,time()+60,"/");
+    header("Location: brala.php");
+}
+if(isSet($_POST['graniastoslup'])) {
+    echo "<form method='post'>
+    <fieldset>
+    <legend>dane do graniastosłupa</legend>
+    wysokość H =  <input type='text' name='h'><br>
+    bok a = <input type='text' name='a'><br>
+    <input type='submit' value='oblicz' name='g'>
+    </fieldset>
+    </form>";
+}
+if(isSet($_POST['g']))  {
+    $h = $_POST['h'];
+    $a = $_POST['a'];
+    $poleG = 2*$a*$a+4*$a*$h;
+    $obG = $a*$a*$h;
+    setcookie("poleG",$poleG,time()+60,"/");
+    setcookie("obG",$obG,time()+60,"/");
+    setcookie("hg",$h,time()+60,"/");
+    setcookie("ag",$a,time()+60,"/");
+    header("Location: brala.php");
+}
+if(isSet($_POST['ostroslup'])) {
+    echo "<form method='post'>
+    <fieldset>
+    <legend>dane do ostrosłupa</legend>
+    wysokość H =  <input type='text' name='h'><br>
+    bok a = <input type='text' name='a'><br>
+    <input type='submit' value='oblicz' name='o'>
+    </fieldset>
+    </form>";
+}
+if(isSet($_POST['o']))  {
+    $h = $_POST['h'];
+    $a = $_POST['a'];
+    $poleO = $a*$a+2*$a*$a*$h;
+    $obO = 1/3*$a*$a*$h;
+    setcookie("poleO",$poleO,time()+60,"/");
+    setcookie("obO",$obO,time()+60,"/");
+    setcookie("ho",$h,time()+60,"/");
+    setcookie("ao",$a,time()+60,"/");
+    header("Location: brala.php");
+}
+?>
+</body>
+</html>
