Please help this is missing work and please show work I just need help with number 3, 9 and 8

Match each polynomial with its factorization.

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

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)