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a. K = 2 kllng O + kllg Persegi + 2 (diagonal persegi)
K= 2(22/7)(7) + 4(7) + 2(7√2)
K = 44 + 28 + 14√2
K = 72 + 14√2
b. K = KO1 +KO2 + 2x8
K = (3,14)(8)+ (3,14)(5) + 16
K = 56,82
c. K = 2x12 + 2(3,14) + 1
K = 24 + 6,28 + 1
K = 31,28