Posted by Delores on Friday, July 30, 2010 at 3:20pm.
Hat sizes are determined by measuring the circumference of the head in either inches or centimeters?
use ratio and proportions to complete the following table
Hat size =7 Head circumference inches = 22 and Centimeters =56
and If hat size was 6 3/4 Head circumference in inches would = ? and in centimeters would = ?

Math  Ms. Sue, Friday, July 30, 2010 at 4:29pm
6 3/4 : x = 7 : 22
7x = 148.5
x = 21.21 inches
Go ahead and do the same thing for the circumference in centimeters  remembering that the answer will be a little less than 56.
We'll be glad to check your answer.

Math  Henry, Friday, July 30, 2010 at 5:56pm
C / 6.75 = 22in / 7, C = 6.75*22/7 =21in
C / 6.75 = 56 / 7, C = 6.75*56/7 = 54cm
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