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Lunna [17]
3 years ago
6

Which explanation can be used to derive the formula for the circumference of a circle?

Mathematics
2 answers:
MrRa [10]3 years ago
8 0
First, find the relationship of the circumference to its diameter by finding that the length of the diameter wraps around the length of the circumference approximately π times. Use this relationship to writing an equation showing the ratio of circumference to diameter equaling π. Then rearrange the equation to solve for the circumference. Substitute the diameter for 2 times the radius
DaniilM [7]3 years ago
5 0

Answer:

B. Find the length of the diameter and the length of the circumference of the circle. Divide the length of the circumference by the length of the diameter. Set up an equation showing the ratio of the circumference to the diameter equal to ​ π ​. Then rearrange the equation by solving it for the circumference. Substitute 2 times the radius for the diameter.

Step-by-step explanation:

I just took the test

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The point (4,y) has a known x coordinate of x = 4. The y coordinate is unknown right now so we'll just call it y.

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Side Note: you don't have to draw a vertical red line but it's handy to see how it works out. After you get used to these types of problems, you can visually be able to see the answer without these extra lines. 

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Step-by-step explanation:

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