10 lampu
Penjelasan dengan langkah-langkah:
K = 10 + 15 + 10 + 15
= 50 m
banyak lampu = 50 : 5
= 10
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10 lampu
Penjelasan dengan langkah-langkah:
K = 10 + 15 + 10 + 15
= 50 m
banyak lampu = 50 : 5
= 10