Update index.html

Author: Gmac4247

index.html

@@ -1472,15 +1472,20 @@ <h6 style="font-size:160%;margin:7px">Area of a circle</h6>
     return;
   }
 
-  const ratio = parseFloat((2 * height / length).toFixed(5));
+    const ratio = 2 * height / length;
 
   // Segment validity check
 
-	if (ratio < 0.11 || ratio > 1) {
-  document.getElementById('segment-area').innerText = 'The ratio is out of range';
-  return;
+  if ( ratio === 0) {
+    document.getElementById('segment-area').innerText = '';
+    return;
 	}
 
+  if (ratio < 0.11 || ratio > 1) {
+    document.getElementById('segment-area').innerText = 'This ratio is out of range';
+    return;
+  }
+
   const angle = parseFloat(2 * Atan(ratio));
   const sine = parseFloat(sin(angle));
   const radius = parseFloat((length / 2 / sine).toFixed(5));