The standard error of the mean is the standard deviation which is 6.50
36x2(for the total amount of yarn for the width) would be 72. 112-72=40. Since it is a rectangle and the width should both be the same size, the length should be 20 inches. (20+20+36+36=112, so 20 inches is the correct answer.
Answer:
They give evidence of cultural, religious, or social characteristics of the people