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marcoduuuh Group Title

Can somebody please check my work? - Giving medals. (; (Picture below.)

  • one year ago
  • one year ago

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  1. marcoduuuh Group Title
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    • one year ago
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  2. Shane_B Group Title
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    I think you're a bit confused. The area of a right triangle is 1/2 base * height which you already know. The problem only gives you the hypotenuse and the base. You need to calculate the height before calculating the area. You can use the Pythagorean theorem to calculate the height pretty easily.

    • one year ago
  3. marcoduuuh Group Title
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    Both of them are wrong?

    • one year ago
  4. Shane_B Group Title
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    Yes, both are wrong. The height in the first one does come out to be 7.14 though...but you have then calculate the area.

    • one year ago
  5. marcoduuuh Group Title
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    Alright. So for the first one, A=1/2(7.14) times what? 15 or 9?

    • one year ago
  6. Shane_B Group Title
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    For the first one: \[a^2+b^2=c^2\]\[7^2+b^2=10^2\]\[b^2=51\]\[b=7.14\] \[A=\frac{1}{2}(7)(7.14)=?\]The second one is answered the same way

    • one year ago
  7. marcoduuuh Group Title
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    Where do you get 7?

    • one year ago
  8. Shane_B Group Title
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    The first problem states that the leg (base) length is 7.

    • one year ago
  9. marcoduuuh Group Title
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    Nvm, I got confused. Sorry.

    • one year ago
  10. marcoduuuh Group Title
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    So for the first one: A=599.76

    • one year ago
  11. Shane_B Group Title
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    Did you put the above in a calculator? That's not even close :/

    • one year ago
  12. Shane_B Group Title
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    You should get an area of ~25

    • one year ago
  13. marcoduuuh Group Title
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    Oh wait! I put it in wrong, I got Area=24.99

    • one year ago
  14. Shane_B Group Title
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    That's correct :) Now just do the second one the same way

    • one year ago
  15. marcoduuuh Group Title
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    For the second one, I used the Pythagorean theorem and I got B=13.6015?

    • one year ago
  16. marcoduuuh Group Title
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    Btw thank for all the help and patience! @Shane_B

    • one year ago
  17. Shane_B Group Title
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    Neverming..windows calculator mistake. Yep, that's correct.

    • one year ago
  18. marcoduuuh Group Title
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    Okay so now, the answer should be A=142.8158?

    • one year ago
  19. marcoduuuh Group Title
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    @Shane_B

    • one year ago
  20. Shane_B Group Title
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    The base of the triangle is 16 and you calculated the height to be 13.6015. So the area should be:\[A=\frac{1}{2}bh=\frac{1}{2}(16)(13.6015)=108.812\]

    • one year ago
  21. marcoduuuh Group Title
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    Oh! That's what I did wrong. I used 21 instead of 16. Thank you so much.

    • one year ago
  22. Shane_B Group Title
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    np :)

    • one year ago
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