<html>
<head>
<title>Circle</title>
<script>
function findArea()
{
var radBox = document.getElementById("input1")
var r = parseFloat(radBox.value)
var area = 3/14 * r * r
var divResult = document.getElementById("result")
divResult.innerHTML = "AREA = "+area
}
</script>
</head>
<body>
<input type="text" placeholder="Enter radius" id="input1"/>
</br>
<input type="button" value="Area" id="button1" onclick="findArea()"/>
<input type="button" value="Perimeter" id="button2"/>
<br>
<!-- Area = 3.14 * r * r-->
<!-- Perimeter = 2 * 3.14 * r-->
<div id="result">
area = 0
</div>
</body>
</html>
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