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OLga [1]
3 years ago
8

What is the formula of a circle in terms of its circumference A=pi*r^2 C=2*pi*r

Mathematics
2 answers:
dedylja [7]3 years ago
8 0

Answer:

Step-by-step explanation:

The formula for circumference in terms of a circle’s diameter is C = πd. The diameter is twice the radius (d = 2r). So, replace d with 2r and rewrite the formula for circumference in terms of radius r:

C = 2πr.

Alja [10]3 years ago
5 0

"Formula of a circle" is too vague to be meaningful. Perhaps you meant, "Formula for the area of a circle in terms of its circumference."

The area of a circle in terms of its radius is A = πr^2. To put this formula to use, we have to know the radius of the circle. The circumference of a circle in terms of its radius is C = 2πr, so a formula for the radius is r = C / (2π).

Now let's find a formula for the area of a circle in terms of its circumference:

C C^2

A = πr^2 = π { ---------------- }^2 = ------------

2π 4π

or:

A = (C^2) / 4π

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Replacing the maximum value of the data set with a smaller number will also affect the mean. A:always B:sometimes C:never
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Answer:

B: sometimes

Step-by-step explanation:

Let's look at two examples.

Example A.

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Replace 5 with 1. Now you have 1, 2, 3: mean is 2.

In this case, it affected the mean.

Example B.

2, 3, 5: mean is 3

Replace 5 with 4. Now you have 2, 3, 4: mean is 3.

In this case, it did not affect the mean.

As you can see, replacing the maximum value of the data set with a smaller number may or may not change the mean.

Answer: B: sometimes

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