Can someone help me :> IF RIGHT...WILL GET DA CROWN UwU

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

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)

Find the arc length of the semicircle. 7the grade