NEED ASAP !!
Will mark the brainliest answer

option 1

Step-by-step explanation:

40ft is radius

first lets find the area of the whole circle

A=pi*r^2

A=pi*40^2

A=pi*1600

A=5026.54824574 ft^2

now, lets find what part of a circle is 80 degrees

80/360=2/9

now lets multiply the total area by the fraction to find what area is actually getting sprinkled

A=5026.54824574*(2/9)

A=10053.0964915/9

A=1117.01072128

A= around 1117.01 ft^2

"if it is my birthday, then it is snowing"

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.