Blueberries are on sale for $2.80 per pint. The regular price is $3.50 per pint. What is the percent of decrease?
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To find the formula to find radius, solve for r using the formula for circumference.
to solve:
1. divide each side by 2
2. you get r = c/2
to solve:
1. divide each side by 2
2. you get r = c/2