*If diagonal of a square is of length 10√2 cm then the perimeter of square is cm.* 1️⃣ 40
2️⃣ 10
3️⃣ 30
4️⃣ 50

1️⃣ 40

Step-by-step explanation:

x - is the side of the square

Find the perimeter of the square.

Perimeter of the square = 4 × 10 cm = 40 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.

dude thats to long figure it

step-by-step explanation: