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Seharusnya Luas Baloknya itu = 2 ( 144) = 288
yang luas balok di kali 1 lusin penghapus = 288 x 12 = 3.456.
Yang No. 37
20 x 6,5 = 130
15 x 6,2 = 93
130-93 = 37
37 / 5 ( siswa yang dihilangkan ) = 7,4
#Sekian.