Jawabanmu

2014-03-11T21:45:14+07:00
2.3 cm x 47 cm = 108.1 cm
108.1 x 1250 = 135.125 cm
salah nih maksudnya 2x ( 2.3 + 47) =98.6 kemudian 98.6 x1250 = 123.250 cm
2014-03-11T21:48:21+07:00
2,3 x 250 = 575
47 x 250  = 11750
K = 2 ( p +l)
    = 2 ( 575 + 11.750)
    = 2(12325) = 24650 
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