Two gears A and B are turning in mesh. Gear As radius to the point of contact

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Two gears A and B are turning in mesh. Gear A’s radius to the point of contact between the gears is 8.0 cm and that of gear B is 4.0 cm.
(a) What is the linear speed of the contact point when gear A’s angular velocity is 6.0 rad/s counterclockwise? 

(b) What is B’s angular velocity?

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