What is managerial accounting, how is it different than financial accounting, and what is the role of ethics in managerial accounting?

1. What is managerial accounting, how is it different than financial accounting, and what is the role of ethics in managerial accounting?2. What are the differences between product cost and period cost? How do they affect the financial statements differently?3. What is the significance of the following measures and how do you calculate them: a. average product cost. b. COGS. c. Ending Inventory.