when adding like fractions, why are the numerators added but not the denominators? When are equivalent fractions used when addin
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It would be 9 ft. using the knowledge of 
times the diameter ( equals aprox. 3.14) equal the circumference of a circle, and since we know the circumference, we need to divide that by to get the diameter.
equation: 28/3.14=8.913
rounding that would bring it to 9 ft.
equation: 28/3.14=8.913
rounding that would bring it to 9 ft.