<html>\n<head>\n    <title>Area of Circle Calculator</title>\n</head>\n<body>\n    <h1>Area of Circle Calculator</h1>\n    <form action="">\n        <label for="radius">Radius </label>\n        <input type="number" name="radius" min="1" max="100" step="0.1" placeholder="Enter Radius">\n        </br>\n        </br>\n        <input type="submit" value="Calculate">\n    </form>\n    <script>\n        function calculateArea(){\n            let radius = document.getElementsByName("radius")[0].value;\n            let area = Math.PI * radius * radius;\n            alert("The area of the circle is: " + area);\n        }\n        document.getElementsByTagName("input")[1].onclick=calculateArea;\n    </script>\n</body>\n</html>
Generate an HTML page that calculates the area of a circle from a given radius.?