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k = 2 (p+l)
300 = 2 (2l + l)
300 = 2 × 3l
300 = 6l
l = 300÷6
l = 50
panjang:
k = 2 (p+l)
300 = 2 (p+50)
300 = 2p + 100
300 - 100 = 2p
200 = 2p
p = 200÷2
p = 100
K = 2 ( p + l)
300 = 2 ( 2l+ l)
150 = 3l
l = 50
p = 100 dan l = 50