GED Test Study Formulas Questions and Answers

how to find the area in a square - area=side2 area of a rectangle - are= length times width area of a parallelogram - area= base times height area of a triangle - area= 1/2 times base times height area of a trapezoid - area=1/2 times (base1 + base2) times height area of a circle - area=square root times radius2; s root is approximately = 3.14 perimeter of a square - p=4*side perimeter of a rectangular - p=2 times length +2 times width perimeter if a triangle - p=side1+side2+side3 circumference of a circle - c= square root times diameter; square root is approx equal to 3.14 how do you get the mean? - The mean of a set of data is probably what most people refer to as average. You find the mean of a set of data by adding up all the numbers in the data set and then dividing by the number of data points you added up. When someone says average, this is usually what they are talking about. how do you get the median? - after putting the numbers in order what is the middle number? if there are two middle number find the mean of the two( how do you get the mode? - The mode of a data set refers to the number that occurs most often. how do you get the range? - subtracting the largest number on the list from the smallest