The teacher didn’t explain how to do these. Could someone please help me? I’m losing my mind. haha

Write a real-world solution that can be represented by the equation y = 7x be sure to explain what the variables represented in the solution

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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)