Respuesta :

2*9= 18
2*2*9= 2*18= 36sq cm
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2*3=6
6*2*3=6*6= 36 sq cm

C: 2x2=4 and bring down the 9 and then 4x9=36

E: 6x2=12 and bring down the 3 and then 12x3= 36