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= 4(12+6+3)
=4(21)
=84
panjang = 12
lebar = 6 cm
tinggi 3 cm
Dit : Keliling Balok .. ?
jawab :
keliling balok = 4p + 4l + 4t
keliling balok = 4 ( 12 + 6 +3 )
keliling balok = 48 + 24 + 12
keliling balok = 84 cm³