Answer:
530.66 cm^2
Explanation:
Equation: 3.14•13^2
13^2= 169
3.14•169= 530.66
Answer:
305.12 square inches
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The area of the window is equal to the area of a rectangle, plus the area of two quarter circles plus the area of the smaller square between the two upper corners
so
Find the area of rectangle
Find the area of the two quarter circle
![A=2[\frac{1}{4}(3.14)(4^2)]](https://tex.z-dn.net/?f=A%3D2%5B%5Cfrac%7B1%7D%7B4%7D%283.14%29%284%5E2%29%5D)
Find the area of the smaller square between the two upper corners
The total area is equal to
The sample size must be 543 so the sample proportion is will not differ by 5%
We are given the following in the question:
Margin of error = 5%
Confidence interval:
p ±z√(p'(1 - p')/n)
Margin of error =
p = ±z√(p'(1 - p')/n)
Since no particular proportion is given, we take
p' = 0.5
Z critical at α 0.02 is ± 2.33
Putting values, we get,
p = ±z√(p'(1 - p')/n)
2.33 x √(0.5(1 - 0.5)/n)
√n = 2.33x 0.5/0.05
n = 542.89 = 543
Thus, the sample size must be 543 so the sample proportion is will not differ by 5%
To learn more about confidence interval refer here
brainly.com/question/15712887
#SPJ4
Hello,
The answer is "95/6".
Reason:
First write the answers into improper fraction:
3 1/3=10/3
4 3/4=19/4
10*19=190
3*4=12
190/2=95
12/2=6
=95/6
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
