In a group of students, 18 read marketing, 19 read economics, 16read finance, 6 read marketing only, 9 read economics only, 5 read marketing and economics only, and 2 read economic and finance find out
1) how many read all three subjects?
2) how many read finance only?
3) how many read marketing and finance only?
4) how many students are there altogether?
1)3
2)7
3)4
4)36

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)