Don't drink and drive: A highway safety council reported that there were 3949 fatalities among drivers in auto accidents in a particular year. Following is a frequency distribution of their ages. Approximate the mean age. Round your answer to one decimal
place.
Age
Number of Fatalities
11-20
343
21-30
1549
31-40
849
41-50
685
403
51-60
61-70
120
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The mean is approximately

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)