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Luas kain :
= 2 m x 1,8 m
= 200 cm x 180 cm
= 36.000
Luas permukaan kubus :
= 6 x s x s
= 6 x 20 cm x 20 cm
= 2.400
Banyak mainan :
= 36.000 : 2.400
= 15 buah