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Verified answer
Kelas 8 MatematikaBab Lingkaran
Panjang busur = 11
(θ/360°) . 2 . π . r = 11
(45°/360°) . 2 . 22/7 . r = 11
1/8 . 44/7 . r = 11
r = 11 . 56/44
r = 14 cm