The formula of an area of a square: 
a - side
We have: 
substitute:

The fromula of a perimeter of a square is: 
substitute:

Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

In which:
is the sample mean.
is the standard deviation for the population.
The margin of error is given by:

In this problem, we have that the parameters are given as follows:
.
Hence, solving for n, we find the sample size.






Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.
More can be learned about the z-distribution at brainly.com/question/25890103
Answer:
30 people ordered apple pie
Step-by-step explanation:
one third of the total people:
180/3 = 60
subtract the people who ordered ice cream, so that we have the total people who ordered pie:
180-60= 120
divide the total people by 4 to find the people who ordered apple pie
120/4 = 30
30 people ordered apple pie
Answer:
yes
Step-by-step explanation:
similar means resembling without being identical or same shape but different size. triangles are obviously the same shape and they're obviously different size.
Answer:
main number
Step-by-step explanation: