to find the area you first need to divide the shape into two parts, then find the area of the first half and then the second and add the areas together:
first part:
5 × 7 = 35cm²
second part:
2 × 5 / 2 =
10 ÷ 2 =
5cm²
then do:
35 + 5 = 40cm²
so the area of the shape is 40cm²