There are 12 girls and 8 boys in Ms. Sander's class. Each day she randomly asks one student to take attendance. In 180 school days, which is the best prediction for the number of times that the student will be a girl?

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)