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AlekseyPX
2 years ago
11

Find the area of the circle.

Mathematics
1 answer:
julia-pushkina [17]2 years ago
7 0

Answer:

The formula used to find area of circle is: Area=\pi \:r^2

Step-by-step explanation:

We need to find area of the circle

<em>(Note: The data is missing in this question, so I will just explain how to find area of circle.)</em>

The formula used to find area of circle is: Area=\pi \:r^2

where r is radius of circle.

So, If we have value of r and we put π = 3.14, we can find area of circle.

Let us suppose that Radius of circle r = 5

Now, the area of circle having radius 5 is:

Area=\pi \:r^2\\Area=3.14 \times (5)^2\\Area=3.14\times 25\\Area=78.5

So, when radius of circle is 5, Area of circle is 78.5

So, Using the radius given in your question, you can find area of circle.

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The z-score of the sale of mobile phones on that day is 1.75

Step-by-step explanation:

The formula of z-score is z = (x - μ)/σ, where:

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∵ The mean sale was 45

∴ μ = 45

∵ The standard deviation was 4

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∵ 52 mobile phones were sold on a particular day

∴ x = 52

To find z-score of the sale of mobile phones on that day substitute the values of x, μ, and σ in the formula of z-score

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∴ z = 1.75

The z-score of the sale of mobile phones on that day is 1.75

Learn more:

You can learn more about z-score in brainly.com/question/7207785

#LearnwithBrainly

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