A circle has a diameter of 10 inches. Use the formulas below to help with your calculations. Part A: What is the radius of the circle? How do you know? Part B: Calculate the area of the circle. Write your answers in terms of AND give a decimal approximation rounded to the nearest hundredth. Show all steps and include units in your answer. Part C: Calculate the circumference of the circle. Write your answers in terms of AND give a decimal approximation rounded to the nearest hundredth. Show all steps and include units in your answer.