Simple geometry problem regarding fitting square inside a circle












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Consider a square of side $a$. Fit the largest possible circle inside it and a largest possible square inside the circle. What is the side length of the square.




Above is how I picture the situation enter image description here



And so the side length of the innermost square equals $sqrt{frac{a^2}{4}+frac{a^2}{4}}=frac{a}{sqrt{2}}$. Is this true. Need help!










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  • $begingroup$
    The side length of the square is $a$, as it says in the first sentence! :)
    $endgroup$
    – Rahul
    Jun 19 '17 at 8:09
















0












$begingroup$



Consider a square of side $a$. Fit the largest possible circle inside it and a largest possible square inside the circle. What is the side length of the square.




Above is how I picture the situation enter image description here



And so the side length of the innermost square equals $sqrt{frac{a^2}{4}+frac{a^2}{4}}=frac{a}{sqrt{2}}$. Is this true. Need help!










share|cite|improve this question











$endgroup$












  • $begingroup$
    The side length of the square is $a$, as it says in the first sentence! :)
    $endgroup$
    – Rahul
    Jun 19 '17 at 8:09














0












0








0





$begingroup$



Consider a square of side $a$. Fit the largest possible circle inside it and a largest possible square inside the circle. What is the side length of the square.




Above is how I picture the situation enter image description here



And so the side length of the innermost square equals $sqrt{frac{a^2}{4}+frac{a^2}{4}}=frac{a}{sqrt{2}}$. Is this true. Need help!










share|cite|improve this question











$endgroup$





Consider a square of side $a$. Fit the largest possible circle inside it and a largest possible square inside the circle. What is the side length of the square.




Above is how I picture the situation enter image description here



And so the side length of the innermost square equals $sqrt{frac{a^2}{4}+frac{a^2}{4}}=frac{a}{sqrt{2}}$. Is this true. Need help!







geometry






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edited Jun 19 '17 at 7:11









callculus

18.5k31428




18.5k31428










asked Jun 19 '17 at 6:52









Castor GodinhoCastor Godinho

854




854












  • $begingroup$
    The side length of the square is $a$, as it says in the first sentence! :)
    $endgroup$
    – Rahul
    Jun 19 '17 at 8:09


















  • $begingroup$
    The side length of the square is $a$, as it says in the first sentence! :)
    $endgroup$
    – Rahul
    Jun 19 '17 at 8:09
















$begingroup$
The side length of the square is $a$, as it says in the first sentence! :)
$endgroup$
– Rahul
Jun 19 '17 at 8:09




$begingroup$
The side length of the square is $a$, as it says in the first sentence! :)
$endgroup$
– Rahul
Jun 19 '17 at 8:09










1 Answer
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2












$begingroup$

Yes, it is.



We have that the diameter of the circle is equal to the side length of the bigger square.



We also have that the diagonal of the square is equal to the diameter of the circle, which is the side length of the square.



We have that $ssqrt{2}=a$, so $s=displaystyle frac{a}{sqrt{2}}$, which is exactly what you said.



Good job!






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    1 Answer
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    active

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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2












    $begingroup$

    Yes, it is.



    We have that the diameter of the circle is equal to the side length of the bigger square.



    We also have that the diagonal of the square is equal to the diameter of the circle, which is the side length of the square.



    We have that $ssqrt{2}=a$, so $s=displaystyle frac{a}{sqrt{2}}$, which is exactly what you said.



    Good job!






    share|cite|improve this answer









    $endgroup$


















      2












      $begingroup$

      Yes, it is.



      We have that the diameter of the circle is equal to the side length of the bigger square.



      We also have that the diagonal of the square is equal to the diameter of the circle, which is the side length of the square.



      We have that $ssqrt{2}=a$, so $s=displaystyle frac{a}{sqrt{2}}$, which is exactly what you said.



      Good job!






      share|cite|improve this answer









      $endgroup$
















        2












        2








        2





        $begingroup$

        Yes, it is.



        We have that the diameter of the circle is equal to the side length of the bigger square.



        We also have that the diagonal of the square is equal to the diameter of the circle, which is the side length of the square.



        We have that $ssqrt{2}=a$, so $s=displaystyle frac{a}{sqrt{2}}$, which is exactly what you said.



        Good job!






        share|cite|improve this answer









        $endgroup$



        Yes, it is.



        We have that the diameter of the circle is equal to the side length of the bigger square.



        We also have that the diagonal of the square is equal to the diameter of the circle, which is the side length of the square.



        We have that $ssqrt{2}=a$, so $s=displaystyle frac{a}{sqrt{2}}$, which is exactly what you said.



        Good job!







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jun 19 '17 at 7:07









        Saketh MalyalaSaketh Malyala

        7,4231534




        7,4231534






























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