Math
posted by Delores .
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 
Terry
Size 7 > 22 in > 56 cm
Size 1 > 22/7 in (3.14 in) > 56/7 cm (8 cm)
Thus:
Size 6 3/4 > 3.14 * 6 3/4 in > 8 * 6 3/4 cm
= about 21.2 in. > 54 cm
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