3) Dedra used coupons 6 times at the store last month. The savings were: $68, $52, $42, $45, $84, $60. What was the mean absolute deviation of the amounts saved? Round the answer to the nearest cent. OA) $10.40 OB $12.17 OC) $4.53 OD $13.68​

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)