diff --git a/src/main/java/com/thealgorithms/maths/Area.java b/src/main/java/com/thealgorithms/maths/Area.java
index 84fc67159379..9b798c95e1da 100644
--- a/src/main/java/com/thealgorithms/maths/Area.java
+++ b/src/main/java/com/thealgorithms/maths/Area.java
@@ -78,7 +78,7 @@ public static double surfaceAreaSphere(final double radius) {
      */
     public static double surfaceAreaPyramid(final double sideLength, final double slantHeight) {
         if (sideLength <= 0) {
-            throw new IllegalArgumentException("");
+            throw new IllegalArgumentException("Side length must be greater than 0");
         }
         if (slantHeight <= 0) {
             throw new IllegalArgumentException("slant height must be greater than 0");
@@ -232,4 +232,30 @@ 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 triangular prism with a right-triangle base.
+     *
+     * @param sideA first perpendicular side of the triangular base
+     * @param sideB second perpendicular side of the triangular base
+     * @param prismLength length of the prism
+     * @return surface area of the given triangular prism
+     */
+    public static double surfaceAreaTriangularPrism(final double sideA, final double sideB, final double prismLength) {
+        if (sideA <= 0) {
+            throw new IllegalArgumentException("Side A must be greater than 0");
+        }
+        if (sideB <= 0) {
+            throw new IllegalArgumentException("Side B must be greater than 0");
+        }
+        if (prismLength <= 0) {
+            throw new IllegalArgumentException("Prism length must be greater than 0");
+        }
+
+        double hypotenuse = Math.sqrt(sideA * sideA + sideB * sideB);
+        double totalTriangleArea = sideA * sideB;
+        double lateralSurfaceArea = prismLength * (sideA + sideB + hypotenuse);
+
+        return totalTriangleArea + lateralSurfaceArea;
+    }
 }
diff --git a/src/test/java/com/thealgorithms/maths/AreaTest.java b/src/test/java/com/thealgorithms/maths/AreaTest.java
index 1c2fe53ff3f3..5836e37d58f5 100644
--- a/src/test/java/com/thealgorithms/maths/AreaTest.java
+++ b/src/test/java/com/thealgorithms/maths/AreaTest.java
@@ -71,44 +71,47 @@ void surfaceAreaCone() {
         assertEquals(301.59289474462014, Area.surfaceAreaCone(6, 8));
     }
 
+    @Test
+    void testSurfaceAreaTriangularPrism() {
+        assertEquals(132.0, Area.surfaceAreaTriangularPrism(3, 4, 10), 1e-9);
+    }
+
     @Test
     void testAllIllegalInput() {
-        assertAll(()
-                      -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCube(0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(0, 1, 2)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(1, 0, 2)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(1, 2, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaSphere(0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaRectangle(0, 10)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaRectangle(10, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCylinder(0, 1)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCylinder(1, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaSquare(0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTriangle(0, 1)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTriangle(1, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaParallelogram(0, 1)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaParallelogram(1, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(0, 1, 1)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(1, 0, 1)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(1, 1, 0)),
-            ()
-                -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCircle(0)),
-            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaHemisphere(0)), () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCone(1, 0)), () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCone(0, 1)));
+        assertAll(
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCube(0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(0, 1, 2)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(1, 0, 2)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCuboid(1, 2, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaSphere(0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaRectangle(0, 10)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaRectangle(10, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCylinder(0, 1)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCylinder(1, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaSquare(0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTriangle(0, 1)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTriangle(1, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaParallelogram(0, 1)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaParallelogram(1, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(0, 1, 1)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(1, 0, 1)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaTrapezium(1, 1, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCircle(0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaHemisphere(0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCone(1, 0)),
+            () -> assertThrows(IllegalArgumentException.class, () -> Area.surfaceAreaCone(0, 1)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(0, 4, 10)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(3, 0, 10)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(3, 4, 0)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(-3, 4, 10)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(3, -4, 10)),
+            () -> assertThrows(IllegalArgumentException.class,
+                () -> Area.surfaceAreaTriangularPrism(3, 4, -10))
+        );
     }
-}
+}
\ No newline at end of file