In light of evidence indicating that errors in making accurate pie charts are prevalent, an alternative method for constructing pie charts is proposed. It involves the use of a simple trigonometric formula to compute a factor of the length of the chord that defines a given percentage sector. This factor is multiplied by the radius of the circle to yield the length of the required chord. The formula, its derivation, and values yielded by it are given. Making approximations using it are briefly discussed. (MNS)