Jawabanmu

2014-08-18T20:21:39+07:00
⇔luas = p x l
100 = 25 x l
100/25 = l
4 = l
⇔ kell = 2 x ( p + l)
 = 2 x (25 + 4 )
 = 2 x 29
 = 58