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2014-03-29T11:29:48+07:00
K= 50
50= 2(p=l)
50= 2(3/2 l + l)
50= 4l
12.5cm = l
3/2 x 12.5 =p
18.75cm =p

b) 12.5 cm x 18.75 = luas p. panjang
    234.375 cm2
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