anonymous
  • anonymous
Calculate the area of triangle ABC with altitude CD given A (6, -2), B (1,3), C (5,5), and D (2,2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
12 square units 13 square units 14 square units 15 square units
anonymous
  • anonymous
@coolman500 @kidrah69 @Demonx341 @Data_LG2 @freckles
anonymous
  • anonymous
Based on my calculations I though it was 13 units

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anonymous
  • anonymous
thought not though
anonymous
  • anonymous
Formula for the area of a triangle is 1/2bh. Do you have any diagrams for this? IF not then I'll assum it will look like this:|dw:1433175385799:dw| First thing you have to do is find the length of of the base, which is the length of AB Then find the height/altitude, which is the length of CD Calculate the lengths using the distance formula. Then after you find the value, apply the the formula for the area. Give me a sec. I'll try to solve it also and I'll tell you if we get the same thing.
anonymous
  • anonymous
OK thanks. I just keep getting the same result...
anonymous
  • anonymous
I get a different answer. hmm.. can you tell me what did you get for the length of AB?
anonymous
  • anonymous
I just calculated the triangle and multiplied the volume against the length of it and I keep getting the same result.@Data_LG2
anonymous
  • anonymous
@Data_LG2 I suck at math AND I AM SHERLOCK HOLMES FOR CRYING OUT LOUD
anonymous
  • anonymous
i REALLY WISH SOMEONE WOULD ANSWER! I feel like I am in the math-twilight zone :(:::::
anonymous
  • anonymous
sorry late response.. do you know the distance formula?
anonymous
  • anonymous
Sort of...
anonymous
  • anonymous
|dw:1433176061208:dw|
anonymous
  • anonymous
The only thing i know abou the distance formula that it is derived from the Pythagorean theorem. And to find the distance between two points (x1,y1) and (x2,y2), all that you need to do is use the ...
anonymous
  • anonymous
yes, that is right. We have to apply it though. It is better if we do this step by step :)
anonymous
  • anonymous
Can you walk me through it... :(
anonymous
  • anonymous
|dw:1433176185824:dw| what will you get when you evaluate this?
anonymous
  • anonymous
Sorry I don't lmpw
anonymous
  • anonymous
know
anonymous
  • anonymous
alright :) what is 1-6?
anonymous
  • anonymous
I am -5????
anonymous
  • anonymous
yes, let's put that in|dw:1433176404671:dw| now what is 3-(-2) ?
anonymous
  • anonymous
1?
anonymous
  • anonymous
negative times a negative will be positive, so it will be 3+2, now what is 3+2?
anonymous
  • anonymous
Sorry I forgot.. :(::::
anonymous
  • anonymous
5
anonymous
  • anonymous
yes, now we'll put that in|dw:1433176628395:dw| now what is -5 x -5 ?
anonymous
  • anonymous
um 25?
anonymous
  • anonymous
yes. |dw:1433176810532:dw| next what is 25+25?
anonymous
  • anonymous
duh 50
anonymous
  • anonymous
k good, what is the sqrt of 50?
anonymous
  • anonymous
I think its 7.1
anonymous
  • anonymous
But the full answer is 7.07106781187
anonymous
  • anonymous
alright, that will be the base. next do the whole thing again but with the length of CD :)
anonymous
  • anonymous
Give me a second
anonymous
  • anonymous
OK. I am going with 15 units it sounds right.
anonymous
  • anonymous
can you tell me how'd you get that?
anonymous
  • anonymous
I did the whole thing and thats what I got.
anonymous
  • anonymous
I did it except witht he length of CD :)
anonymous
  • anonymous
ok?
anonymous
  • anonymous
dO You think its right. ? @Data_LG2
anonymous
  • anonymous
yes, it is right. But I just hope you understand how to get that answer :)
anonymous
  • anonymous
@Data_LG2 Thanks I learned a lot

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