
Luas persegi panjang
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Isnaeny Isnaeny
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MATEMATIKA
2. LUAS PERSEGI PANJANG
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Luas Persegi Panjang
Jika luas persegi panjang adalah "L"
Panjang persegi panjang adalah "p"
Lebar persegi panjang adalah "l"
Maka rumus mencari luas persegi panjang adalah :
L = p x l
Luas = Panjang x Lebar
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Contoh 4.16
Penyelesaian:
Banyak petak dalam satu baris adalah 6 petak, sedangkan banyak baris adalah 4 baris, maka luas persegi panjang sebagai berikut:
L = p x l
L = 6 x 4
L = 24
Jadi, luas persegi panjang adalah 24 satuan luas.
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Contoh 4.17
Penyelesaian:
L = p x l
L = 12 x 8
L = 96
Jadi, luas persegi panjang adalah 96 cm2.
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Mencari salah satu sisi persegi panjang
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Contoh 4.18
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Contoh 4.19
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Kerjakan soal latihan berikut ini!
Tentukan luas bangun datar pada gambar di samping!
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Tentukan panjang atau lebar persegi panjang berikut!
MATEMATIKA
2. LUAS PERSEGI PANJANG
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