Answers

2016-02-01T21:43:50+08:00
L= 9 w= 4 h= 3 
2(l x w ) + 2 (l x h ) +2 (w x h )
2(9 x 4) + ( 4 x 3 ) +2 ( 9 x3 )
2(36) +2(12) + 2 ( 27 )
72+ 24 + 54
= 150
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