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Anonymous
Of course:
25m2 - 20m + 4 = (5m - 2)2.
Wiki User
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yes
20m x 20m = 400 metres2
3h + (2h 20m) + 35m = (3+2)h + (20+35)m = 5h + 55m
20m/mn = 4/n
Yes waffle can be provided for 20m x 20m span but it becomes uneconomical