K = a + b + c
K = 30 + 39 + 39
K = 69 + 39
K = 108 cm
Opsi (A)
____________________________________
keliling = semua sisi dijumlah
k = 30 + 39 + 39
k = 108
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K = a + b + c
K = 30 + 39 + 39
K = 69 + 39
K = 108 cm
Opsi (A)
____________________________________
keliling = semua sisi dijumlah
k = 30 + 39 + 39
k = 108