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marcoduuuh

  • one year ago

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

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  1. marcoduuuh
    • one year ago
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  2. Shane_B
    • one year ago
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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.

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

  4. Shane_B
    • one year ago
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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.

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

  6. Shane_B
    • one year ago
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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

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

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

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

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

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

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

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

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

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

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

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

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

  19. marcoduuuh
    • one year ago
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    @Shane_B

  20. Shane_B
    • one year ago
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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:\[A=\frac{1}{2}bh=\frac{1}{2}(16)(13.6015)=108.812\]

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

  22. Shane_B
    • one year ago
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    np :)

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