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1 year ago

12

The area of a circle is 28.26 square miles. What is the circle's diameter?

1 answer:

DochEvi [55]1 year ago

3 0

The diameter is 6. Explanation:

radius: 3.14r^2

28.26=3.14r^2

28.26/3.14=r^2

r^2=9

r=3

and we know that diameter is two times the radius so:

3*2=6

diameter equals 6.

if you want to check it plug back in:

3^2 * 3.14 = 28.26

hope this helped :)

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Answer:

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

For two points (x₁, y₁) and (x₂, y₂), the distance between them is:

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The order of points 1 and 2 don't matter. You can switch it:

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This is basically the Pythagorean theorem for a coordinate system.

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If you have points with negative coordinates, remember that subtracting a negative is the same as adding a positive.

For example, the distance between (-1, -2) and (4, 10) is:

d² = (4 − (-1))² + (10 − (-2))²

d² = (4 + 1)² + (10 + 2)²

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2 years ago

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Step-by-step explanation:

The fundamental theorem of algebra guarantees that a polynomial equation has the same number of complex roots as its degree.

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