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Verified answer
MAPEL = MATEMATIKAKELAS = 8
BAB = LINGKARAN
diketahui :
- sudut pusat = 45°
- jari jari = 56cm
Ditanya = panjang busur ??
--- Hubungan sudut pusat dengan panjang busur ---
Panjang busur = 45°/360° × Kll.O
= 45°/360° × ( 2πr )
= 45°/360° × ( 2 × 22/7 × 56cm )
= 1/8 × ( 352cm )
= 44cm
Jadi, panjang busur yg menghadap sudut 45° = 44cm
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