Case 1: The area of this 5-sided polygon is 5.57 Case 2: The area of this 5-sided polygon is 22.27 Case 3: The area of this 5-sided polygon is 50.11 Case 4: The area of this 6-sided polygon is 5.20 Case 5: The area of this 10-sided polygon is 24.35 Case 6: The area of this 11-sided polygon is 178.13 Case 7: The area of this 19-sided polygon is 120.38