3 x 4000

(a)  

10 x 3000

(a)  

60 x 800

(a)  

200 x 400

(a)  

300 x 1000

(a)  

8 x 300

(a)  

30 x 70

(a)  

400 x 900

(a)  

5 x 400

(a)