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l= 4 m
K= 2(p+l)
= 2. (12 + 4)
= 2. 16 = 32 m
2. p= 16 m
l= 3 m
K= 2(p+l)
= 2. (16 + 3)
= 2. 19 = 38 m
3. p= 8 m
l= 6 m
K= 2(p+l)
= 2. (8 + 6)
= 2. 14 = 28 m