In the expression shown below, the number 2 and 5 that are place in front of the variables are called 2x^2+5x-3

A. Degrees
B. Polynomials
C. Coefficient
D. Radicals

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)