Update index.html

Author: Gmac4247

index.html

@@ -3990,7 +3990,7 @@ <h4 itemprop="description">The volume of a cone can be calculated by algebraical
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 <section itemprop="potentialAction" itemscope itemtype="https://schema.org/SolveMathAction" id="frustum_cone" itemref="cone">
-<h3 itemprop="eduQuestionType" style="margin:7px">Volume of a Frustum Cone</h3>
+<h3 itemprop="eduQuestionType" style="margin:7px">Volume of a horizontal Frustum Cone</h3>
 <meta itemprop="target" content="https://basic-geometry.github.io?q={frustum_cone_radius_top=1_bottom=2_height=3_volume=?}">
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 <figure class="imgbox" itemscope itemtype="http://schema.org/ImageObject">