Jawabanmu

2014-05-30T20:07:15+07:00
Dik =
L = 16cm²

L = s²
16 = s²
s = √16
s = 4

K = 4s
K = 4.4
K = 16 cm

Semoga bermanfaat, dan maaf jika ada kesalahan :')
2014-05-30T20:08:59+07:00
R = 2,25
K = 14,13 
semoga bermanfaat..