Work out the value of x and give a reason for your answer. Work out the value of y and give a reason for your answer

Ineed to know the answer to this algebra question.

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)

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is