Question

A gear 12 cm in diameter is turning a gear 18 cm in diameter. When the smaller gear has 42 revolutions ,how many revolutions has the larger one made​

Answer 1

Answer:

SEE THE ATTACHMENT ..

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Answer 2

Step-by-step explanation:

given

the diameter of two gear

the diameter of small gear=12cm

so,

Radius of small gear=12/2=6cm

revolution of small gear=42

the diameter of large gear=18cm

so,

Radius of large gear =18/2=9cm

revolution of large gear=revolution of small gear

=2πr*large gear=2πr*42

=large gear=2π6*42/2π9=>28

hence:-

the revolution of large gear will be 28

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