I will tackle this problem by dividing the figure into 4 visible rectangles and 1 L shaped figure which i will add together to get the total area.
Rectangle (1)= h×w =4×5=20 cm²
Rectangle (2)= h×l =4×5=20 cm²
Rectangle (3)= h×l =4×5=20 cm²
Rectangle (4)= h×w =4×5=20 cm²
L-shaped polygon which i will divide into 2 parts
Part 1's area: l×w= 5×5=25 cm²
Part 2's area: l×w= 10×5=50 cm²
Total area=(20+20+20+20+25+50)
Total area=155 cm²
