Penyelesaian: Diket.: α=180° r=28 cm Ditanya: Panjang busur=....? Luas juring=....? Jawab: Panjang busur =α/360°×2πr =180°/360°×2×22/7×28 =1/2×1232/7 =1/2×176 =88 cm
Luas juring =α/360°×πr² =180°/360°×22/7×28² =1/2×22/7×784 =1/2×17248/7 =1/2×2464 =1232 cm²
Verified answer
Caranya lihat di gambar ya. Semoga bermanfaat.perbaikan untuk panjang busur
= 1/2 x 2 x 22/7 x 28
= 22 x 4
= 88 cm
Verified answer
Penyelesaian:Diket.:
α=180°
r=28 cm
Ditanya:
Panjang busur=....?
Luas juring=....?
Jawab:
Panjang busur
=α/360°×2πr
=180°/360°×2×22/7×28
=1/2×1232/7
=1/2×176
=88 cm
Luas juring
=α/360°×πr²
=180°/360°×22/7×28²
=1/2×22/7×784
=1/2×17248/7
=1/2×2464
=1232 cm²
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