Penjelasan dengan langkah-langkah:
9] Panjang busur AB
= a/360° . π . d
= 120°/360° . 22/7 . 28
= 1/3 . 22 . 4
= 88/3
= 29 1/3 cm
10] Sudut AOD / sudut COD = panjang busur CD/ panjang busur AD
Sudut AOD / 45° = 9/27
Sudut AOD = 45° . 1/3
Sudut AOD = 15°
Kelas 8
Pelajaran Matematika
Bab Lingkaran
9) = 120/360 × 22/7 × 28
= 1/3 × 88
= 29,33 cm atau 29 1/3 cm
10) <AOD/busur AD = <COD/busur CD
<AOD/27 = 45/9
<AOD = 5 × 27
<AOD = 135°
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Penjelasan dengan langkah-langkah:
9] Panjang busur AB
= a/360° . π . d
= 120°/360° . 22/7 . 28
= 1/3 . 22 . 4
= 88/3
= 29 1/3 cm
10] Sudut AOD / sudut COD = panjang busur CD/ panjang busur AD
Sudut AOD / 45° = 9/27
Sudut AOD = 45° . 1/3
Sudut AOD = 15°
Kelas 8
Pelajaran Matematika
Bab Lingkaran
Penjelasan dengan langkah-langkah:
9) = 120/360 × 22/7 × 28
= 1/3 × 88
= 29,33 cm atau 29 1/3 cm
10) <AOD/busur AD = <COD/busur CD
<AOD/27 = 45/9
<AOD = 5 × 27
<AOD = 135°