Analyzing the Data

At this point you should have the first two columns in the table filled.  Look carefully at the data.

  1. Can you see a relationship between the circumference and the diameter for each of the circles?
  2. In the previous page we suggested that you try to predict how much larger the circumference is than the diameter.  How good was your prediction?

Here we have a simple calculator that will allow you to divide the circumference by the diameter and give you a very accurate ratio.  Go ahead, and calculate the ratio for every circle in the table and fill out the third column in the table.

Divide circumference:
By diameter:
To get:  

Now that you have calculated all the ratios here are a few more questions:

  1. Are the ratios close to your prediction?
  2. How similar are the different ratios that you got?
  3. Does the value of the ratio depend on the size of the circle?
  4. What does all of these data analysis tells you?
  5. What can you conclude from all of this?
Take you time, answer all the questions, and then you can go to the last page of this lesson.

 


Measuring Circles
Table of Contents
Interesting Facts about Pi

 Last updated: Sunday, 10-Jun-2001 23:29:59 GMT

 


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