Which statement is true? OA The numbers on a horizontal number line are oriented from right to left, B. The numbers on a vertical number line are oriented from top to bottom. OC. The numbers on a horizontal number line are oriented from left to right. OD The numbers on a vertical number line are oriented from right to left.

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)