From c59230ed8b6e5029b4a9431f1df5fe18da5b6fe1 Mon Sep 17 00:00:00 2001
From: Joshthesav12 <jrslamont@gmail.com>
Date: Thu, 29 Oct 2026 16:12:21 -0400
Subject: [PATCH] Added surface area calculation for pyramid

---
 .../java/com/thealgorithms/maths/Area.java    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/main/java/com/thealgorithms/maths/Area.java b/src/main/java/com/thealgorithms/maths/Area.java
index 84fc67159379..18c87b8ef5dd 100644
--- a/src/main/java/com/thealgorithms/maths/Area.java
+++ b/src/main/java/com/thealgorithms/maths/Area.java
@@ -232,4 +232,23 @@ public static double surfaceAreaCone(final double radius, final double height) {
         }
         return Math.PI * radius * (radius + Math.pow(height * height + radius * radius, 0.5));
     }
+
+    /**
+        * Calculate the surface area of a pyramid with a square base.
+        *
+        * @param sideLength side length of the square base
+        * @param slantHeight slant height of the pyramid
+        * @return surface area of the given pyramid
+        */
+        public static double surfaceAreaPyramid(final double sideLength, final double slantHeight) {
+            if (sideLength <= 0) {
+                throw new IllegalArgumentException("Must be a positive sideLength");
+            }
+            if (slantHeight <= 0) {
+                throw new IllegalArgumentException("Must be a positive slantHeight");
+            }
+            double baseArea = sideLength * sideLength;
+            double lateralSurfaceArea = 2 * sideLength * slantHeight;
+            return baseArea + lateralSurfaceArea;
+        }
 }