anonymous
  • anonymous
What is the area of ABC below? If necessary, round your answer to two decimal places.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
i got the area form each triangle sepreatly then added them up and got 128.77
Preetha
  • Preetha
That should be right. You have two sides, you can calculate the third.

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More answers

anonymous
  • anonymous
i'll check your answer and see if it's right. Give me a second :)
anonymous
  • anonymous
thank you :)
anonymous
  • anonymous
37.13
anonymous
  • anonymous
@slopez95
anonymous
  • anonymous
you got that for the bigger one? because I got 21.81. hmm how did you get that?
anonymous
  • anonymous
i multiply 7.9 and 23.2 for the big one then divide by 2 same for the small one 9.4x7.9 then divide by 2
anonymous
  • anonymous
hmm that might be why. i used a^2+b^2=c^2 to get the base of both triangles first. to get the area you do bh/2. base is the bottom measurement.
anonymous
  • anonymous
well i have to find the area so i found he area of both then add them together i think thats how?
anonymous
  • anonymous
yes but you're finding the area the wrong way. first you have to find the base. without the base measurement you can't find area. once you do it that way, you can add them
anonymous
  • anonymous
poo so how can i find the base? can you help me plz :)
anonymous
  • anonymous
okayy. a triangle is sides a, b and c. now the slanted side is always c. For the smaller one the sides are b=7.9 and c=9.4. plug it into this and solve. a^2+b^2=c^2 let me know what you get.
anonymous
  • anonymous
so it would be 62.41 and 88.36 then subtract = 25.9 right?
anonymous
  • anonymous
yes! now find the square root since that is squared right now.
anonymous
  • anonymous
5.09?
anonymous
  • anonymous
exactly :) now do the same for the bigger triangle.
anonymous
  • anonymous
i got square root of 21.81?
anonymous
  • anonymous
26.9?
anonymous
  • anonymous
oh wait, no i'm sorry. now with each of the bases you do bh/2 to get the area. my bad. So it'll be 5.09*7.9 and 21.81*7.9
anonymous
  • anonymous
hahaha lol its cool =)
anonymous
  • anonymous
i got 40.211 and 172.299?
anonymous
  • anonymous
yes :) now add lol
anonymous
  • anonymous
212.51?
anonymous
  • anonymous
you got it :)
anonymous
  • anonymous
thank you ur awesome
anonymous
  • anonymous
No problem :) thanks.

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