Skip to content / Đến nội dung
ThichHocToan.com

Australian AMC 2019 - Intermediate Question 15

AMC AUSTRALIA · Australian AMC 2019 - Intermediate

Question 15

The set of four rollers shown has fixed axles and transfers rotation from each roller to the next without slipping. Their diameters are 21 cm, 32 cm, 50 cm and 14 cm respectively.
While the 21 cm roller makes a full rotation $(360^\circ)$, through which angle does the 14 cm roller rotate?

Question illustration
  1. $180^\circ$
  2. $310^\circ$
  3. $360^\circ$
  4. $540^\circ$
  5. $620^\circ$