Sets of 8 pieces of tinsel are sold at a Christmas fair for 1.72 per set. The decorations are bought in boxes which contain 24 sets and cost 17.28. How much does each decoration cost on average for the stallholder to buy and for how much is each sold for? I will give brainiest if you do it right

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)