You manage a construction company. Last month, you purchased 500 board feet of lumber for $2,475. This month, you shopped at a different store and purchased 600 board feet of the same type of lumber for $2,802. What is the approximate percent difference between the unit costs at each store?

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)