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24 = 2 × (p+l)
p+l = 24 : 2
p + l = 12
l = p - 2
p + l = 12
p + (p - 2) = 12
2p -2 = 12
2p = 12 + 2
2p = 14
p = 7,
l= p - 2
l= 7 - 2
l= 5
luas = p × l
= 7 × 5
= 35 cm^2
l= p -2
24= (p +l) x 2
24/2 = p + p-2
12 +2 = 2p
14 = 2p
p= 14/2 = 7
l = 7 - 2 = 5
Luas = 7 x 5 = 35 cm²
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