Keliling pekarangan = 2 (25+15)
= 2 (40) = 80 m - 3m = 77 m
Dikurangi 3m krn disisakan untuk pintu masuk
Pagar tembok = 77 × 2 = 154 m^2
Banyak batu bata = 154 × 60
= 9240 buah
Jadi, banyak batu bara yang diperlukan sebanyak 9240 (C)
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Keliling pekarangan = 2 (25+15)
= 2 (40) = 80 m - 3m = 77 m
Dikurangi 3m krn disisakan untuk pintu masuk
Pagar tembok = 77 × 2 = 154 m^2
Banyak batu bata = 154 × 60
= 9240 buah
Jadi, banyak batu bara yang diperlukan sebanyak 9240 (C)