It can be divided into Two rectangles
One of sides
6cm and 16cm
The other
12cm and 8cm
The area is found by calculating the areas of both and then adding them
Area =Length x Width
Area(1)=6 x 16 = 96 cm squared
Area(2)=12 x 8 = 96 cm squared
Total Area of polygon= Area(2) + Area(2)
=96 + 96
=192 cm squared