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h1 = 7 cm
t = 2 minggu = 7 x 2 = 14 hari
h2 = 25 cm
dit : Laju pertumbuhan V ?
dijawab :
V = (ht-h1)/t
= (25-7)/14
= 18/14
= 1,28 cm/hari
jadi laju pertumbuhan = 1,28 cm/hari