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marcoduuuh

  • 2 years ago

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

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  1. marcoduuuh
    • 2 years ago
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  2. Shane_B
    • 2 years 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
    • 2 years ago
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    Both of them are wrong?

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

  6. Shane_B
    • 2 years 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
    • 2 years ago
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    Where do you get 7?

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

  9. marcoduuuh
    • 2 years ago
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    Nvm, I got confused. Sorry.

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

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

  12. Shane_B
    • 2 years ago
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    You should get an area of ~25

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

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

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

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

  17. Shane_B
    • 2 years ago
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    Neverming..windows calculator mistake. Yep, that's correct.

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

  19. marcoduuuh
    • 2 years ago
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    @Shane_B

  20. Shane_B
    • 2 years 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
    • 2 years 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
    • 2 years ago
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    np :)

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