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2015-08-26T22:34:24+08:00

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72 meter square 
then marmol 10 cm
convert meter to centimeter
72 m X  10cm/m
we all know that 100 cm is 1 m  
that why 72 x 100
7200 then divide by 10 cm w/c is marmol
720 pcs is the final answer
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