r = 15 cm
α = 120°
Panjang busur AB
= α/360° x Keliling Lingkaran
= 120°/360° x 2 x π x r
= 1/3 x 2 x 3,14 x 15
= 1/3 x 30 x 3,14
= 10 x 3,14
= 31,4 cm
Jawaban C
Jawab: 31,4 cm
Penjelasan dengan langkah-langkah:
Panjang busur AB = 120°/360° × 2×Phi×r
Panjang busur AB = 1/3 × 2×3,14× 15
Panjang busur AB = 31,4 cm
Jadi jawaban yang benar C) 31,40
=================================
Detail Jawaban
Kode : 8.6.2
Kelas : 8
Kode Mapel : 2
Mata Pelajaran : Matematika
Bab : 6
Sub bab : Bab 6 - Lingkaran
Kata Kunci : Panjang Busur, Sudut pusat
================================
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r = 15 cm
α = 120°
Panjang busur AB
= α/360° x Keliling Lingkaran
= 120°/360° x 2 x π x r
= 1/3 x 2 x 3,14 x 15
= 1/3 x 30 x 3,14
= 10 x 3,14
= 31,4 cm
Jawaban C
Jawab: 31,4 cm
Penjelasan dengan langkah-langkah:
Panjang busur AB = 120°/360° × 2×Phi×r
Panjang busur AB = 1/3 × 2×3,14× 15
Panjang busur AB = 31,4 cm
Jadi jawaban yang benar C) 31,40
=================================
Detail Jawaban
Kode : 8.6.2
Kelas : 8
Kode Mapel : 2
Mata Pelajaran : Matematika
Bab : 6
Sub bab : Bab 6 - Lingkaran
Kata Kunci : Panjang Busur, Sudut pusat
================================