The number of pizzas, y, and the weight of the shredded cheese topping, x, on the pizza make a proportional relationship. when shredded, a 50-lb block of cheese is enough to make 150 large pizzas. a. find the constant of proportionality. b. how can you use the constant of proportionality to find how much cheese is on one slice of pizza, if there are 8 slices per pizza? explain.

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)