Update index.html

Author: Gmac4247

index.html

@@ -3307,7 +3307,7 @@ <h3 itemprop="name" style="margin:7px">Area of a Circle Segment</h3>
 
 	const ratio = (radius - height) / radius;
 	const angle = parseFloat(Acos(ratio));
-	const length = parseFloat(2 * sqrt(radius**2 - (radius - height)**2);
+	const length = parseFloat(2 * sqrt(radius**2 - (radius - height)**2));
 
     document.getElementById('segment-area').innerText =
     `Area: ${area.toFixed(5)} square units`;