Please help and explain!! Will give medal!

A chain fits tightly around two gears as shown. What is the radius of the smaller gear? Round your answer to the nearest tenth
a. 23.2
b.4.8
c.9.2
d.14.0

Please help and explain Will give medal A chain fits tightly around two gears as shown What is the radius of the smaller gear Round your answer to the nearest t class=

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