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Panjang = 6 cm + l
K = 2 p + 2 l
60m = 2 (6m+l) + 2(l)
60m = 12 + 2l + 2l
60m- 12 cm = 4(l)
48m = 4(l)
48cm/4 = l
12 m = l
L = p x l
= (6m+12m) x 12 m
= 18 m x 12 m
= 216 m²
semoga membantu
l = 18 - 6 = 12
L = p x l = 18 x 12 = 216
semoga membantu
tolong jadikan jawaban terbaik