Question
Bambi is restoring a clock with a broken gear. A fragment of the small gear has 5 teeth . a larger unbroken gear has 18 teeth and is 2cm in dia.She knows that for every 2 times the large gear turns the smaller gear turns 3 times. How much cm of the perimeter on the broken gear is missing teeth.
Answers
clearly the smaller wheel has 2/3 the diameter of the larger wheel.
So, it has 2/3 * 18 = 12 teeth.
So, what is 7/12 of its circumference?
So, it has 2/3 * 18 = 12 teeth.
So, what is 7/12 of its circumference?
thanks
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