1. SPLITTING OF COMBINED SHAPES
Combined Shapes is combination of known shapes like rectangle, square, triangle etc.
To split combined shapes we have draw line between two points in line such that they form the shape whose area we can calculate.

2. Rectangle and Triangle
Shape 1:
Rectangle and Triangle
SOLUTION:

3. Shape 2:
Square and Rectangle
SOLUTION2:
SOLUTION1:

4. Shape 3: Rectangle and Triangle
SOLUTION1:
SOLUTION 2:

5. Shape 4:
Square and Triangle
SOLUTION:

6. Shape 5:
Two Rectangles
SOLUTION 2:
SOLUTION 1: