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= 2(30 + 5)
= 2(35)
= 70 cm
= 7 dm
p = 30 cm
l = 5 cm
Ditanya = keliling persegi panjang =... ?
Jawab =
k. persegi pnjng = 2(p+l)
k. persegi pnjng = 2(30+5)
k. persegi pnjng = 2(35)
k. persegi pnjng = 70 cm^2 = 0,7 dm^2
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