Using the Pythagorean Theorem. 1  1. Learn the Pythagorean Theorem. 2  2. Make sure that your triangle is a right triangle. 3  3. Assign variables a, b, and c to the sides of your triangle.  4. Find the squares of a and 1  b. 5. Add together the values of a2 and 2  b2. 6. Find the square root of  c2.
A custodial fee is simply a flat fee charged by a bank or brokerage for administering or managing an IRA. Virtually every type of IRA is associated with some type of custodial fee, regardless of whether you choose a certificate of deposit, a mutual fund or some other type of IRA.
BlackRock Mutual Funds charges a $15 annual fee, and American Funds charges a $10 annual custodian fee per Social Security number. Even low-cost mutual funds leader Vanguard charges a $20 IRA maintenance fee unless have a balance of $10,000 or more or are a Voyager or Flagship member. How-To Avoid IRA Fees Even at financial firms that charge annual custodial fees on their IRA accounts, there are usually ways to get the IRA account for free.