The box below is 15 centimeters long, 4 centimeters wide, and 3 centimeters tall. What is the length of the diagonal s of the bottom side to the nearest tenth if necessary?

The diagonal of the bottom side is 17.5 cm.

Step-by-step explanation:

The diagonal of a rectangle is a straight line that joins any two of its edges.

Given that: length = 15 cm, width = 4 cm, and h = 3 cm.

The bottom side is the flat rectangular surface (base) of length 15 cm and width 4 cm which excludes the height.

So that the diagonal, s, can be determined by Pythagoras theorem.

= +

   = 289 + 16

   = 305

s =

 = 17.46425

The diagonal of the bottom side is 17.5 cm.

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.