anonymous
  • anonymous
At the farmer's market, there is a scale that measures the weight of fruit and vegetables. The needle is 16 cm long, and it rotated 68° when Danielle placed six oranges on it. How far did the needle travel as it rotated? How would I do this one?
Trigonometry
schrodinger
  • schrodinger
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DrummerGirl3
  • DrummerGirl3
he needle is the radius of a circle. The distance it rotates is a portion of the circumference. Since there are 360° in a circle, multiply this by 68/360. The answer is then found as 16*2π*(68/360). That comes out somewhere below 20cm. Do it yourself in Excel to get the real answer. Doesn't that give you 18.98918226 (which is really 19cm)?
anonymous
  • anonymous
So multiply the radius by 68/360?
DrummerGirl3
  • DrummerGirl3
exactly

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anonymous
  • anonymous
thank you :D Thats all i needed
DrummerGirl3
  • DrummerGirl3
No Problem ;)

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