6÷2 (1+3)= what is the answer to this problem and why i say 1. some say 9.

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)

What is the solution to the division problem below x3+x2-11x+4/x+4

Solve the equation for b: a= (1/2)(b)(h)