Jawabanmu

2014-09-12T17:44:50+07:00
Ukuran sisi = 3n + 1 = 3.5 +1 = 15 + 1 =16
Luas persegi = s*s = 16*16= 256 cm2
Keliling persegi = 4*s= 4*16 = 64 cm
2 4 2
Jawaban paling cerdas!
2014-09-12T17:45:06+07:00
Ukuran sisi= (3n+1),n=5.
sisi = (3.5+1)
      = (15+1)= 16
keliling =4xsisi 
= 4.16= 64 
luas= sisi x sisi 
=16x16=256
5 4 5