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lebar = 3
keliling persegi panjang = 2p + 2l
= 2.6 + 2.3
= 12 + 6
= 18 cm
jadikan jawaban terbaik ya, terimaksih ^^
Lebar = 3 cm (ps) dan (qr)
Keliling = 2 x (p+l)
2 x (6+3)
2 x 9
18 cm² (kalau satuannya cm)
Jadikan Yang Terbaik =D