Tolong Dijawab Yahh Make Cara Plisss Besokk Dikumpulinn

keliling kertas =p×l = 45 × 30
=1350 cm
kel layang²=1/2 × d1×d2
=1/2 × 25 × 40
= 25 × 20
=500
sisa kertas = 1350 cm - 500 cm
= 850 cm

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