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AOB / COD = AB / CD
120 / 30 = 44/ CD
120 . CD = 44 . 30
120CD = 1320
CD = 1320 : 120
CD = 11 cm (D)
20.
AB = . 2πr
= .2π9
= 6π (b)
Semoga membantu
120 / 30 = 44 / CD
120 CD = 30 × 44
120 CD = 1320
CD = 1320 / 120
CD = 11 cm (D)
20) AB = sudut/360 × 2 π r
= 120/360 × 2π × 9
= 1/3 × 18π
= 6π cm (B)