alurahenderson
  • alurahenderson
WILL MEDAL What is the area of the figure?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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alurahenderson
  • alurahenderson
http://static.k12.com/calms_media/media/1564500_1565000/1564707/1/da50a8e105c95ba2b02d0c060fa79b0955c72380/MS_IMB-1401012-1100604.jpg
jojo12g
  • jojo12g
wheres the piicture
anonymous
  • anonymous
wheres the figure?

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More answers

KaylaRdz0405
  • KaylaRdz0405
the figure?
anonymous
  • anonymous
k
alurahenderson
  • alurahenderson
Sorry I thought I sent it
anonymous
  • anonymous
its fine lol :)
anonymous
  • anonymous
DO you know how to find the area of triangles and/or trapezoids?
anonymous
  • anonymous
do 17 times 14 and then 18 times 12
alurahenderson
  • alurahenderson
Yes I do
alurahenderson
  • alurahenderson
b x h /2 ?
anonymous
  • anonymous
And which one is that for?
anonymous
  • anonymous
well, with this figure you can break it down...so if you know how to find the area of triangles and trapezoids, its not as hard as it looks :)
anonymous
  • anonymous
yes
alurahenderson
  • alurahenderson
How would I find the width? {I am horrible with math sorry}
alurahenderson
  • alurahenderson
???
alurahenderson
  • alurahenderson
238 and 216
anonymous
  • anonymous
hm? what do you mean?
alurahenderson
  • alurahenderson
Because if i break it up the shape at the top would need a height, sorry I meant hieght not width
alyssa_xo
  • alyssa_xo
you have the height of part of the whole shape and and the entire complex shape the trapezoid is just 17-12
alurahenderson
  • alurahenderson
2?
alyssa_xo
  • alyssa_xo
http://puu.sh/i2KkC/b0aa4001c8.png nope
alyssa_xo
  • alyssa_xo
notice that the height of the triangles is 12 the whole shape's height is 17 that means if you extend the height of the triangle to the end of the shape you get \(12+x=17\)
alurahenderson
  • alurahenderson
5
alurahenderson
  • alurahenderson
I don't know why I put 2
alyssa_xo
  • alyssa_xo
|dw:1432754292136:dw| area of a trapezoid = \(\dfrac{a+b}{2}h=\dfrac{14+18}{2}*5=\dfrac{32}{2}*5=16*5=80\) next, we find the area of the triangles
alurahenderson
  • alurahenderson
Okay, is 9 the width because it's half of the bottom of the top shape?
alyssa_xo
  • alyssa_xo
that isn't necessary as we'd be adding up the 2 triangles anyways. recall that \(Area(\Delta)=\dfrac{bh}{2}\)
alurahenderson
  • alurahenderson
oh
alyssa_xo
  • alyssa_xo
if you don't believe me you can break it up or do it as a whole.|dw:1432754774085:dw|
alurahenderson
  • alurahenderson
oh! okay see I didn't understand what you were saying at first I get it now it would be 108?
alyssa_xo
  • alyssa_xo
mhm 108+the other area is the whole thing
alurahenderson
  • alurahenderson
216
alyssa_xo
  • alyssa_xo
hm? I thought the other area was 80
alurahenderson
  • alurahenderson
oh im sorry I thought you meant not to half to triangles and add those
alurahenderson
  • alurahenderson
188
alyssa_xo
  • alyssa_xo
oh, you added up the triangle twice the reason I drew it out was because I wanted to demonstrate that you could either take the area of the whole triangle (0.5*12*18=108) or you could do the 2 triangles (0.5*12*9)+(0.5*12*9)=108
alyssa_xo
  • alyssa_xo
yeah
alurahenderson
  • alurahenderson
Okay, Thank you very much :}
alyssa_xo
  • alyssa_xo
you're welcome ;)
alyssa_xo
  • alyssa_xo
:) whoops

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