Update index.html

Author: Gmac4247

index.html

@@ -2415,10 +2415,10 @@ <h6 style="font-size:160%;margin:7px">Area of a circle</h6>
 
 function updatePyramidVolume() {
   const number = parseFloat(document.getElementById('pyramid-side-number').value);
-  const length = parseFloat(document.getElementById('pyramid-base-edge-length').value);
+  const baseEdge = parseFloat(document.getElementById('pyramid-base-edge-length').value);
   const height = parseFloat(document.getElementById('pyramid-height').value);
 
-  if (isNaN(number) || isNaN(length) || isNaN(height)) {
+  if (isNaN(number) || isNaN(baseEdge) || isNaN(height)) {
     document.getElementById('pyramid-volume').innerText = '';
     return;
   }
@@ -2430,7 +2430,7 @@ <h6 style="font-size:160%;margin:7px">Area of a circle</h6>
 
   const ratio = 3.2 / number;
   const tangent = tan(ratio);
-  const baseArea = (number / 4) * (length ** 2) / tangent;
+  const baseArea = (number / 4) * (baseEdge ** 2) / tangent;
   const volume = pyramidVolume(baseArea, height);
 
   document.getElementById('pyramid-volume').innerText =