kymber
  • kymber
How do you find perimeter of square if given the diagonal?
Mathematics
chestercat
  • chestercat
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ParthKohli
  • ParthKohli
Hey :)
saifoo.khan
  • saifoo.khan
After solving.
ParthKohli
  • ParthKohli
It just involves pythagorean theorem.

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saifoo.khan
  • saifoo.khan
|dw:1337701107499:dw|
ParthKohli
  • ParthKohli
|dw:1337701083545:dw| Here it is. Just put in the formula: c^2 = 2a^2(a = b)(diagonal = c
saifoo.khan
  • saifoo.khan
5 is the value i just supposed?
kymber
  • kymber
It is 5, & I got 3.5, but it's wrong x_x
anonymous
  • anonymous
d^2=2*s^2
anonymous
  • anonymous
solve for s
kymber
  • kymber
?!!? baaah |dw:1337701419454:dw|
anonymous
  • anonymous
Perimeter= 2x sqr rt2 x diagonal D
anonymous
  • anonymous
Am i correct?
anonymous
  • anonymous
d^2=2*s^2 Solve for s then it is s*4
anonymous
  • anonymous
\[d^2=s^2+s^2\] \[d^2=2s^2\] \[(d^2)/2=s^2\] \[s=d/\sqrt{2} \] P=4*s \[s=4*d/\sqrt{2} \] \[s=2\sqrt{2}*d \]
anonymous
  • anonymous
last to s's should be P's
anonymous
  • anonymous
1) divide by \(\sqrt{2}\) to get the length of the side then 2) multiply by 4 to get the length of the perimeter
kymber
  • kymber
I got itttt. Thaanks errybody!

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