Question

Tolong yang jago nomer 5 mencari:
a.jari jari
b.panjang busur AB
c.luas juring PAB

Answer 1

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Semoga membantu.......,

Answer 2

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Kelas 8 Matematika
Bab Lingkaran

5] Sudut pusat = 45°
Luas juring = 77

a] Luas juring = 77
a/360° . π . r . r = 77
45°/360° . 22/7 . r . r = 77
r² = 77 . 360° . 7 / (45° . 22)
r = √(196)
r = 14

b] Panjang busur
= 45°/360° . 2 . 22/7 . 14
= 11 cm