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maka
Kp = Kpp
⇒ 4s = 2(p + l)
⇒ 2s = p + l
⇒ 2(x + 3) = 2x - 3 + x + 1
⇒ 2x + 6 = 3x - 2
⇒ 3x - 2x = 6 + 2
⇒ x = 8 cm
Maka panjang sisi persegi,
s = x + 3
= 8 + 3
= 11 cm
Terimakasih semoga membantu