On a coordinate plane, 2 triangles are shown. the first triangle has points s (3, 5), r (5, 0), and q (1, 0). the second triangle has points s prime (negative 3, 0), r prime (negative 5, 0), and q prime (negative 1, 0). which rule represents r0, 180°?

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)