Area of an L-shaped figure

Find the area of the big rectangle, then subtract the cut-out corner.

1. An L-shaped floor is made by cutting a rectangle that is 5 cm by 3 cm out of a corner of a rectangle that is 8 cm by 8 cm. What is the area of the floor?
2. An L-shaped floor is made by cutting a rectangle that is 5 cm by 1 cm out of a corner of a rectangle that is 9 cm by 7 cm. What is the area of the floor?
3. An L-shaped floor is made by cutting a rectangle that is 6 cm by 6 cm out of a corner of a rectangle that is 9 cm by 8 cm. What is the area of the floor?
4. An L-shaped floor is made by cutting a rectangle that is 5 cm by 3 cm out of a corner of a rectangle that is 7 cm by 8 cm. What is the area of the floor?
5. An L-shaped floor is made by cutting a rectangle that is 1 cm by 3 cm out of a corner of a rectangle that is 8 cm by 6 cm. What is the area of the floor?
6. An L-shaped floor is made by cutting a rectangle that is 7 cm by 3 cm out of a corner of a rectangle that is 14 cm by 12 cm. What is the area of the floor?
7. An L-shaped floor is made by cutting a rectangle that is 2 cm by 2 cm out of a corner of a rectangle that is 6 cm by 11 cm. What is the area of the floor?
8. An L-shaped floor is made by cutting a rectangle that is 4 cm by 3 cm out of a corner of a rectangle that is 12 cm by 8 cm. What is the area of the floor?
9. An L-shaped floor is made by cutting a rectangle that is 1 cm by 13 cm out of a corner of a rectangle that is 10 cm by 16 cm. What is the area of the floor?
10. An L-shaped floor is made by cutting a rectangle that is 7 cm by 2 cm out of a corner of a rectangle that is 12 cm by 11 cm. What is the area of the floor?
11. An L-shaped floor is made by cutting a rectangle that is 4 cm by 2 cm out of a corner of a rectangle that is 14 cm by 13 cm. What is the area of the floor?
12. An L-shaped floor is made by cutting a rectangle that is 10 cm by 7 cm out of a corner of a rectangle that is 12 cm by 14 cm. What is the area of the floor?
13. An L-shaped floor is made by cutting a rectangle that is 13 m by 14 m out of a corner of a rectangle that is 17 m by 16 m. What is the area of the floor?
14. An L-shaped floor is made by cutting a rectangle that is 7 m by 10 m out of a corner of a rectangle that is 16 m by 12 m. What is the area of the floor?
15. An L-shaped floor is made by cutting a rectangle that is 15 m by 4 m out of a corner of a rectangle that is 20 m by 12 m. What is the area of the floor?
16. An L-shaped floor is made by cutting a rectangle that is 7 m by 7 m out of a corner of a rectangle that is 21 m by 10 m. What is the area of the floor?
17. An L-shaped floor is made by cutting a rectangle that is 30 m by 22 m out of a corner of a rectangle that is 39 m by 35 m. What is the area of the floor?
18. An L-shaped floor is made by cutting a rectangle that is 24 m by 12 m out of a corner of a rectangle that is 36 m by 18 m. What is the area of the floor?
19. An L-shaped floor is made by cutting a rectangle that is 19 m by 19 m out of a corner of a rectangle that is 31 m by 22 m. What is the area of the floor?
20. An L-shaped floor is made by cutting a rectangle that is 37 m by 27 m out of a corner of a rectangle that is 39 m by 42 m. What is the area of the floor?