added simplifying comments

maths/area.py

@@ -5,6 +5,7 @@
 
 
 def surface_area_cube(side_length: float) -> float:
+    # Exact Formula - side_length^2 * 6
     """
     Calculate the Surface Area of a Cube.
     >>> surface_area_cube(1)
@@ -22,7 +23,8 @@ def surface_area_cube(side_length: float) -> float:
     """
     if side_length < 0:
         raise ValueError("surface_area_cube() only accepts non-negative values")
-    return 6 * side_length**2
+    return 6 * side_length**2  # Side length is squared to get the area of 1 side \
+    # which is then multiplied by 6 because a cube has 6 sides
 
 
 def surface_area_cuboid(length: float, breadth: float, height: float) -> float:
@@ -72,7 +74,7 @@ def surface_area_sphere(radius: float) -> float:
     """
     if radius < 0:
         raise ValueError("surface_area_sphere() only accepts non-negative values")
-    return 4 * pi * radius**2
+    return 4 * pi * radius**2  # radius**2 = r^2
 
 
 def surface_area_hemisphere(radius: float) -> float:
@@ -299,11 +301,16 @@ def area_triangle_three_sides(side1: float, side2: float, side3: float) -> float
         ...
     ValueError: Given three sides do not form a triangle
     """
+
+    # Area = √(s(s-a)(s-b)(s-c)) - Mathematical notation of Heron's Formula
+
     if side1 < 0 or side2 < 0 or side3 < 0:
         raise ValueError("area_triangle_three_sides() only accepts non-negative values")
-    elif side1 + side2 < side3 or side1 + side3 < side2 or side2 + side3 < side1:
+    elif (
+        side1 + side2 < side3 or side1 + side3 < side2 or side2 + side3 < side1
+    ):  # Sum of 2 sides must be higher than 1 side - Math Axiom
         raise ValueError("Given three sides do not form a triangle")
-    semi_perimeter = (side1 + side2 + side3) / 2
+    semi_perimeter = (side1 + side2 + side3) / 2  # Math semi-perimeter formula
     area = sqrt(
         semi_perimeter
         * (semi_perimeter - side1)
@@ -343,6 +350,12 @@ def area_parallelogram(base: float, height: float) -> float:
 def area_trapezium(base1: float, base2: float, height: float) -> float:
     """
     Calculate the area of a trapezium.
+    <<<<<<< patch-2
+    Formula - (a+b) * height * 0.5
+    a = parallele side 1, b = parallel side 2
+
+    =======
+    >>>>>>> master
     >>> area_trapezium(10, 20, 30)
     450.0
     >>> area_trapezium(1.6, 2.6, 3.6)
@@ -378,6 +391,8 @@ def area_trapezium(base1: float, base2: float, height: float) -> float:
         ...
     ValueError: area_trapezium() only accepts non-negative values
     """
+
+    # Area = (parallel side 1 + parallel side 2) * height / 2
     if base1 < 0 or base2 < 0 or height < 0:
         raise ValueError("area_trapezium() only accepts non-negative values")
     return 1 / 2 * (base1 + base2) * height
@@ -434,6 +449,7 @@ def area_ellipse(radius_x: float, radius_y: float) -> float:
 def area_rhombus(diagonal_1: float, diagonal_2: float) -> float:
     """
     Calculate the area of a rhombus.
+    Formula - (diagonal 1 * diagonal 2)/2
     >>> area_rhombus(10, 20)
     100.0
     >>> area_rhombus(1.6, 2.6)