shop makes donuts that serve 1 person each. For a party the baker is asked to make a large donut in the same shape that will serve 25 people. By what scale factor will the donut need to be dilated? Round your answer to the nearest tenth.   The donuts are coated in a thin layer of glaze. Assume the thickness of the glaze is the same on both donuts. How many times more gla

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A donut shop makes donuts that serve 1 person each. For a party the baker is asked to make a large donut in the same shape that will serve 25 people.

  • By what scale factor will the donut need to be dilated? Round your answer to the nearest tenth.
  •  
  • The donuts are coated in a thin layer of glaze. Assume the thickness of the glaze is the same on both donuts. How many times more glaze will be required for the dilated donut as for the original? Round your answer to the nearest tenth.  
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Question?  You are saying the scale factor the donut needs to be dilated is 25/1

And

The glaze needs will be 50/1 for the dilated donut. 

I don't understand why you muliplied by 2 for the glaze.

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