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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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  2. jdoe0001
    • one year ago
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    use the pythagorean rule to fine the "slanted sides", or hypotenuses |dw:1437004754288:dw|

  3. jdoe0001
    • one year ago
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    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 :)

  4. anonymous
    • one year ago
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    so the answer is 904?

  5. anonymous
    • one year ago
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    @jdoe0001

  6. jdoe0001
    • one year ago
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    well.. what did you get for the hypotenuses?

  7. anonymous
    • one year ago
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    500 and 404

  8. anonymous
    • one year ago
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    the answer 904 is wrong

  9. jdoe0001
    • one year ago
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    right one sec

  10. jdoe0001
    • one year ago
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    \(\bf c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}\impliedby \textit{pythagorean theroem} \\ \quad \\ \textit{left triangle hyp}=\sqrt{2^2+20^2}\to \sqrt{404} \\ \quad \\ \textit{right triangle hyp}=\sqrt{10^2+20^2}\to \sqrt{500}\)

  11. jdoe0001
    • one year ago
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    thus \(\bf \textit{perimeter}=2+19+10+\sqrt{500}+19+\sqrt{404}\)

  12. anonymous
    • one year ago
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    I got 54.2 @jdoe0001

  13. anonymous
    • one year ago
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    so its 92.46

  14. jdoe0001
    • one year ago
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    well. I used 50 because.... 19 + 19 = 38 38 +2 = 40 40 + 10 = 50

  15. jdoe0001
    • one year ago
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    but yes, 92.46

  16. jdoe0001
    • one year ago
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    the nearest tenth will be ... notice, a "6" after the 4, so the 4 rounds up to 50 or 92.5

  17. anonymous
    • one year ago
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    thanks !

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