anonymous
  • anonymous
Can somebody please check my work? - Giving medals. (; (Picture below.)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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Shane_B
  • Shane_B
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.
anonymous
  • anonymous
Both of them are wrong?

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Shane_B
  • Shane_B
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.
anonymous
  • anonymous
Alright. So for the first one, A=1/2(7.14) times what? 15 or 9?
Shane_B
  • Shane_B
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
anonymous
  • anonymous
Where do you get 7?
Shane_B
  • Shane_B
The first problem states that the leg (base) length is 7.
anonymous
  • anonymous
Nvm, I got confused. Sorry.
anonymous
  • anonymous
So for the first one: A=599.76
Shane_B
  • Shane_B
Did you put the above in a calculator? That's not even close :/
Shane_B
  • Shane_B
You should get an area of ~25
anonymous
  • anonymous
Oh wait! I put it in wrong, I got Area=24.99
Shane_B
  • Shane_B
That's correct :) Now just do the second one the same way
anonymous
  • anonymous
For the second one, I used the Pythagorean theorem and I got B=13.6015?
anonymous
  • anonymous
Btw thank for all the help and patience! @Shane_B
Shane_B
  • Shane_B
Neverming..windows calculator mistake. Yep, that's correct.
anonymous
  • anonymous
Okay so now, the answer should be A=142.8158?
anonymous
  • anonymous
@Shane_B
Shane_B
  • Shane_B
The base of the triangle is 16 and you calculated the height to be 13.6015. So the area should be:\[A=\frac{1}{2}bh=\frac{1}{2}(16)(13.6015)=108.812\]
anonymous
  • anonymous
Oh! That's what I did wrong. I used 21 instead of 16. Thank you so much.
Shane_B
  • Shane_B
np :)

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