A perfect square inside a circle and a perfect square

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SUMMARY

The discussion focuses on the geometric relationship between a perfect square inscribed in a circle and a perfect square circumscribed around the same circle. Participants clarify that the area between the inner square and the circle is not equal to the area between the circle and the outer square. To analyze this, one should start with a unit circle defined by the equation x² + y² = 1, then determine the coordinates of the inner square's corners and the outer square's corners. This approach allows for the calculation of the areas involved, leading to a definitive answer to the posed question.

PREREQUISITES
  • Understanding of basic geometric shapes: circles and squares
  • Familiarity with the equation of a circle, specifically x² + y² = 1
  • Knowledge of area calculation for squares and circles
  • Ability to work with coordinates in a Cartesian plane
NEXT STEPS
  • Calculate the area of a square using the formula A = s²
  • Learn how to derive the area of a circle using A = πr²
  • Explore the concept of inscribed and circumscribed shapes in geometry
  • Investigate the properties of unit circles and their applications in geometry
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Students studying geometry, educators teaching mathematical concepts, and anyone interested in the properties of shapes and their relationships in a coordinate system.

gonnis
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A perfect square inside a circle (so the inner square's corners touch the circle) and a perfect square surrounds the circle (so the circle touches the sides of the outer square. Are the extra bits between the inner square and the circle equal to the extra bits between the circle and the outer square?
Im not explaining this very good but hopefully the question makes sense. Don't know how to include a drawing here.
Thanks
 
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This looks like a homework question, if so it belongs in another forum I think.
Anyway, do you know the area of a square?
Do you know the area of a circle?
 
No barefeet this isn't a homework problem lol... its just been a while since I've thought about circles... I am asking in the context of before pi. OK its grade school question, its sort of stupid, but its legit, please indulge if you don't mind.
(fyi I asked a similarly dull question in gen discussion and they moved it to gen math, so I figured I may as well just post here because it would probably get moved lol)
thanks!
 
gonnis, why would you think the area between the inner square and the circle would be equal to the area between the circle and the outer square? Have you made an attempt to come up with an answer for yourself?
1. Start with a unit circle centered at the origin. Its equation is x2 + y2 = 1.
2. Inscribe a square inside the circle, then find the coordinates of the corners of the inner square.
3.Circumscribe a larger square around the circle, and find its corner points.
4. From the information obtained, you should be able to find the areas of all of the objects here, and thereby answer your question.

(BTW, "perfect square" is redundant - a square is a square.)
 

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