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3 years ago

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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lana [24]

Answer:

thank youu

Step-by-step explanation:

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3 years ago

Read 2 more answers

According to the U.S. National Transportation Safety Board, the number of airline accidents by year from 1983 to 2006 were 23, 1

Lera25 [3.4K]

Answer:

$\bar X= 33.79167$

$s= 12.06497$

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

$Median= \frac{30+31}{2}= 30.5$

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

We can calculate the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X= 33.79167$

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:

$s= 12.06497$

And the sample size for this case is n =24. We can calculate the standard error with this formula:

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

And the median for this case since the sample size is 24 first we need to sort the data on increasing order and we got:

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

And for this case the median would be the average from the position 12 and 13 and we got:

$Median= \frac{30+31}{2}= 30.5$

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3 years ago

Find three consecutive integers whose sum is 0.

ANTONII [103]

0, -3 ,+3

hope it helped u! ^^

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2 years ago

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Please help with number 9,10,11 thank you

beks73 [17]

Answer:

I know the first one is A/the first one don't know the other ones

Step-by-step explanation:

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3 years ago

What's the area of this?

Jet001 [13]

122.

Thank you very much.

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3 years ago