Solve for the other missing lengths given only two measurements:
1. a = 4, b = 6
2. a = 8, c = 10
3. a = 5, c = 8
4. a = 9, m = 6
5. a = 12, h = 9
6. b = 6, c = 15
7. b = 12, n = 9
8. b = 4, n = 3
9. b = 10, h = 6
10. b = 11, h = 8
11. c = 18, m = 12
12. c = 15, n = 8
13. c = 20, m = 6
14. m = 12, n = 8
15. m = 9, h = 12
16. n = 10, h = 12
17. a = 9, m = 6
18. c = 18, m = 12