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jari-jari = 28 cm
P.busur = sudut pusat/360° × Kll
p.busur = 135°/360° × 2 × 22/7 × 28
= 66 cm
Semoga membantu ^_^
135/360× 2×22/7×28
135/360×176
=2.3760:360
=66
maaf ya kalau jawabannya salah hihi