anonymous
  • anonymous
Find the perimeter of the figure. Round your answer to the nearest tenth. http://scde.mrooms.org/file.php/2247/Images/Ch11Test/11_2.JPG
Geometry
schrodinger
  • schrodinger
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anonymous
  • anonymous
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jdoe0001
  • jdoe0001
use the pythagorean rule to fine the "slanted sides", or hypotenuses |dw:1437004754288:dw|
jdoe0001
  • jdoe0001
the perimeter is the addition of all sides so, once you get those hypotenuses by using the pythagorean theorem sum them all up, and that's the perimeter of the figure :)

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anonymous
  • anonymous
so the answer is 904?
anonymous
  • anonymous
jdoe0001
  • jdoe0001
well.. what did you get for the hypotenuses?
anonymous
  • anonymous
500 and 404
anonymous
  • anonymous
the answer 904 is wrong
jdoe0001
  • jdoe0001
right one sec
jdoe0001
  • jdoe0001
\(\bf c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}\impliedby \textit{pythagorean theroem} \\ \quad \\ \textit{left triangle hyp}=\sqrt{2^2+20^2}\to \sqrt{404} \\ \quad \\ \textit{right triangle hyp}=\sqrt{10^2+20^2}\to \sqrt{500}\)
jdoe0001
  • jdoe0001
thus \(\bf \textit{perimeter}=2+19+10+\sqrt{500}+19+\sqrt{404}\)
anonymous
  • anonymous
I got 54.2 @jdoe0001
jdoe0001
  • jdoe0001
https://www.google.com/search?client=opera&q=50%2Bsqrt(500)%2Bsqrt(404)&sourceid=opera&ie=utf-8&oe=utf-8&channel=suggest&gws_rd=ssl
anonymous
  • anonymous
so its 92.46
jdoe0001
  • jdoe0001
well. I used 50 because.... 19 + 19 = 38 38 +2 = 40 40 + 10 = 50
jdoe0001
  • jdoe0001
but yes, 92.46
jdoe0001
  • jdoe0001
the nearest tenth will be ... notice, a "6" after the 4, so the 4 rounds up to 50 or 92.5
anonymous
  • anonymous
thanks !

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