Why is accounting important for a manager?

The financial statements used in accounting are like a photograph of the companies financial standing at any given period. This is important to managers because this shows them how much money the company is making (revenue) and spending (expenses and supplies, etc.)

By viewing this a manager can decide several things, can the company afford to hire more employee's or is the financial state of the company not good enough for them to afford salaries or wages. Does the company need to lay-off employee's, is the company earning a profit or are they showing a loss?

Accounting it literally the life blood of any business, without knowing where a company stands financially, a manager, a CEO, or even a private owner can not operate the business to its fullest potential.