The Perimeter and Area of the composite shape are:
Perimeter = 64.2 km
Area = 143.1 km²
What is the Perimeter and Area of the Composite Shape?
Using Pythagoras Theorem, we have:
BC = √(5.2² - 4.1²)
BC = 3.2
Thus, the Perimeter of the composite figure is:
P = 15.2 + 15.2 + 5.2 + 20.2 + 3.2 + 5.2
P = 64.2 km
The area of the composite shape is:
A = (23.4 * 4.1) + ¹/₂(23.4 * 4.1)
A = 143.1 km²