Matematika

Pertanyaan

Tolong bantu jawab ya kak...
Tolong bantu jawab ya kak...

1 Jawaban

  • Diketahui
    r = 14 cm
    Sudut AOB = 60°

    a) panjang busur AB
    = (sudut AOB / 360° ) × keliling lingkaran (2πr)
    = (60°/360°) × (2 × 22/7 × 14)
    = 1/6 × 88
    = 14,67 cm

    b) luas juring AOB
    = (60°/360°) × luas lingkaran (πr²)
    = 1/6 × (22/7 × 14²)
    = 1/6 × 616
    = 102, 67 cm²