Answer:
45cm^2
Explanation:
we have two shapes in the diagram a square and a triangle so we find the area of each of them and add them together 
finding the area of a square 
we have area= s×s 
area = 7×5
area = 35cm^2
finding the area of a triangle 
1/2 ×b×h
1/2×4×5
area = 10cm^2
so we add together 
total area = 35+ 10
area = 45cm^2