What is the standard deviation of the data set given below. 4789 and 12

The product of two negative rational numbers is always zero sometimes zero never zero

Answer this question only if you know the 30 points and

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.