Lainey rides a ski lift down the mountain. Her elevation change is -3,430 feet at a rate of -490 feet per minute. How long will it take Lainey to travel from the top of the ski lift to the bottom of the ski lift?

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)