From b3299fb837a338763e733b128263fbe0d8e67605 Mon Sep 17 00:00:00 2001
From: suhaschenna <suhaschenna05@gmail.com>
Date: Wed, 28 Oct 2026 18:16:55 -0400
Subject: [PATCH] Added surface area calculation for pyramid

---
 .../java/com/thealgorithms/maths/Area.java     | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/main/java/com/thealgorithms/maths/Area.java b/src/main/java/com/thealgorithms/maths/Area.java
index 84fc67159379..260ca3dd9528 100644
--- a/src/main/java/com/thealgorithms/maths/Area.java
+++ b/src/main/java/com/thealgorithms/maths/Area.java
@@ -232,4 +232,22 @@ 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;
+}
 }