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kondaur [170]
3 years ago
12

How do you find the area of a circle? Isn't it π and something?

Mathematics
1 answer:
viva [34]3 years ago
7 0

Hi there!


You are partially correct on the π symbol, but there's more!


The formula for finding the area of a circle is:


A = π r².


A stands for area, π stands for pi, and r stands for radius. The ² is there because the radius is half as big as the diameter of a circle.


Hope this helps! :D


And remember, you can message me whenever you need to on anything you may need help with!

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Step-by-step explanation:

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Answer:

\bar X= 33.79167

s= 12.06497

SE= \frac{s}{\sqrt{n}}= \frac{12.06497}{\sqrt{24}}=2.463

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Step-by-step explanation:

For this case we have the following data:

23, 16, 21, 24, 34, 30, 28, 24, 26, 18, 23, 23, 36, 37, 49, 50, 51, 56, 46, 41, 54, 30, 40, and 31

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Then we can calculate the standard deviation with this formula:

s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s= 12.06497

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Step-by-step explanation:

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122.

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