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L p.pjg = 32 × 18
L p.pjg = 576 cm² --> = L persegi
L persegi = s²
576 = s²
s = √576
s = 24 cm
Maka,
K persegi = 4 × s
K persegi = 4 × 24
K persegi = 96 cm
maaf kalau salah :)