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anonymous

  • one year ago

help!

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  1. anonymous
    • one year ago
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    @Astrophysics

  2. anonymous
    • one year ago
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  3. Astrophysics
    • one year ago
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    We just need to divide the area of the circle by the area of a square, so what is the area of a square and circle?

  4. anonymous
    • one year ago
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    4?

  5. Astrophysics
    • one year ago
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    No..I mean what's the formula

  6. anonymous
    • one year ago
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    how do i find the formula?

  7. Astrophysics
    • one year ago
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    Area of a square is side * side right? So we can say \[A_{\square} = a^2\] and area of a circle is \[A_{circle} = \pi r^2\]

  8. anonymous
    • one year ago
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    im confused, i dont know what the formula is

  9. anonymous
    • one year ago
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    @Mehek14

  10. Astrophysics
    • one year ago
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    Geny, I provided you the formulas, you learn this in elementary. You just remember them for now, now since the radius is half the size of the side of a square we will let 2r be the side of the square, so we have a = 2r putting it all together we have \[A_{\square} = (2r)^2~~~~A_{circle}=\pi r ^2\]

  11. anonymous
    • one year ago
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    ok then what

  12. Astrophysics
    • one year ago
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    So we have \[\frac{ \pi r ^2 }{ (2r)^2 }\]

  13. anonymous
    • one year ago
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    ok

  14. Astrophysics
    • one year ago
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    So plug in the values and evaluate.

  15. anonymous
    • one year ago
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    can you help me with that though please

  16. anonymous
    • one year ago
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    i think its A

  17. anonymous
    • one year ago
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    the area of square is 64, right? @Astrophysics

  18. Astrophysics
    • one year ago
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    Yes.

  19. anonymous
    • one year ago
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    ok so then 4 x 2/8 x 2?

  20. anonymous
    • one year ago
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    @Astrophysics

  21. myininaya
    • one year ago
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    @geny55 have you found the area that is in the square but not in the circle?

  22. myininaya
    • one year ago
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    hint: to find that area you will need to find the difference between the square's area and the circle's area

  23. myininaya
    • one year ago
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    notice the square's side length is given by (4+4) and the circle's radius is given by 4 it should be pretty easy to find the areas of both the square and circle now and you want to know the difference of these areas over the squares area

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