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108 = 3L x L
108/3 = L²
36= L²
L=√36=6
diket
L = 6
P = 3L = 3*6= 18
dit keliling?
jawab
keliling = 2(p+l)
2(18+6)
2(24)= 48 cm
108=3xl
l=108:3=36.
jadi K=2x(p+l)
K=2x(3+36)
K=2x39
K=78