Question

I don’t really get how to do this?

Answer 1

Step One
Find the area of the unshaded region
The unshaded region is a rectangle. Its area will be
A = L * W
L = 7 m
W =2 m 

Area = 7 * 2 = 14 m^2

Step Two
Find the Area of the entire region, both shaded and unshaded areas.
A = L * W
L = 10 m
W = 12 m

Area = 12 * 10 = 120 m^2

Step Three 
Find the area of the shaded region.
Shaded Area = whole area - unshaded region
Shaded Area =  120 m^2 - 14 m^2
Shaded Area = 106 m^2

Answer: 106 m^2

Answer 2

The area of the whole shaded region is 12 * 10 = 120. 

There is the smaller non-shaded box though of 7 * 2 = 14. 

Take the difference of the two by doing 120 - 14 = 106 and that's your answer. 

106 m²