This episode of GED Connection focuses on formulas. Formulas are written in the language of algebra using letters to stand for numbers. These letters are called variables. A list of formulas will be supplied to the GED test taker but it is important to understand what the formulas mean in order to put them to use. The formulas covered in this program are: the formula for the area of a rectangle, how to calculate distance, circumference of a circle, area of a circle, volume of an object, and areas of two separate shapes or odd shapes. An architect shows the viewer how she uses algebraic formulas to calculate the volume of a basement in an ancient building; and a construction manager goes through a series of formulas as he calculates the volume of a cylindrical hole and the cost of the concrete to fill it.