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P x 12 = 156
P = 156 / 12 = 13 cm
Kliling = 2( P+L)
= 2( 13 + 12)
= 2( 25)
= 50 cm
156 = p x 12cm
p =
= 13cm
K = 2 (p + l)
= 2 (13cm + 12cm)
= 2 x 25cm
= 50cm