Jawabanmu

2014-09-12T21:47:36+07:00
30m/65m . 165m/A
= A.30m x  165m.65m
=A = 10725m/30m
A= 357,5m
1 3 1
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2014-09-12T21:55:39+07:00
30 = 165
65      A
30a= 10725
a= 10725
        30
a= 357,5
3 4 3