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L = 196 cm
maka :
L = sisi x sisi
196 = sisi²
sisi = √196
sisi = 14 cm
jadi :
K = 4 x sisi
= 4 x 14
= 56 cm
196 = s²
√196 = s
14 = s
Keliling = 4s
= 4.14
= 56 cm