Let's break apart the composite figure:
The unknown side lengths are labeled in blue.
Perimeter
The perimeter of any shape is the sum of all of the sides.
Let's start at the bottom ( 9 inch ) and add each side length, going counterclockwise. So,
The perimeter is 28 inches
Area
We have broken down the area of the composite figure into 2 parts.
• Top Part - A square with side lenghts of 3 inches
,
• Bottom Part - A rectangle with length 9 inches and height 2 inches
Area of Top (Red Color)
A = 3^2 = 9 sq. in.
Area of Bottom (Orange Color)
A = 9 x 2 = 18 sq. in.
Total Area is 9 + 18 = 27 sq. in.
Total Area
27 square inches