
Bangun Datar
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•
Mathematics
•
4th Grade
•
Hard
fany firdaus
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7 Slides • 0 Questions
1
Bangun Datar
B. Keliling Bangun Datar
2
Tahapan yang harus kalian lakukan untuk memahami keliling bangun datar.
mengamati
menanya
menalar
mencoba
mengkomunikasikan
3
Keliling Bangun Datar
Keliling bangun datar adalah jumlah seluruh sisi-sisi pada bangun datar tersebut.
4
1. Keliling Persegi
Suatu persegi mempunyai dua diagonal yang saling berpotongan tegak lurus dan saling membagi dua bagian yang sama.
Misalkan keliling persegi adalah K dan sisi persegi adalah s, maka keliling persegi dapat dihitung dengan cara berikut.
K = s + s + s + s
K = 4 x s
5
Penyelesaian
Contoh 4.4
K = 4 x s
K = 4 x 16
K = 64 cm
Jadi, keliling persegi adalah 64 cm.
6
Penyelesaian
Contoh 4.5
s =4K=4196=49 cm
Jadi, panjang sisi persegi adalah 49 cm.7
Ayo berlatih
Kerjakanlah soal latihan di samping, kerjakan di buku tugasmu.
Bangun Datar
B. Keliling Bangun Datar
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