anonymous
  • anonymous
Can u please help me with #38 I HAVE TRIED SO HARD ON IT and still cant get the answer please help:)? http://cbuddman.files.wordpress.com/2009/08/final-review-part-2.pdf
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!
Kuoministers
  • Kuoministers
first you would need to find the area of the rectangle. Then you would find the area of the triangle with the formula A = 1/2 B H. To find the height you would need to sin rule.
anonymous
  • anonymous
help please:)
Kuoministers
  • Kuoministers
have you learnt of special triangles?

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anonymous
  • anonymous
30 60 90...45 45 90..i learned them
Kuoministers
  • Kuoministers
if you used the sin rule the length opposite 60 is \[\sqrt{48}\]
Kuoministers
  • Kuoministers
they want the area of this question right?
anonymous
  • anonymous
yes
Kuoministers
  • Kuoministers
if you used the sin rule again you would find the bottom length to be equal to 4.
Kuoministers
  • Kuoministers
so the area of the triangle is equal to 8 root 3. \[8\sqrt{3}\]
anonymous
  • anonymous
HOW U GET THAT?
Kuoministers
  • Kuoministers
ok.. the area of the traingle is 1/2 b h right? 1/2 * 4 * \[\sqrt{48}\] I have gotten this by using right angle trig? sin cos tan?
Kuoministers
  • Kuoministers
1/2 * 4 * \[\sqrt{48}\] = \[\sqrt{192}\] which is simplified to be\[8\sqrt{3}\]
anonymous
  • anonymous
so now i know that whats next?
Kuoministers
  • Kuoministers
well i got the area of the triangle so all you need now is area of rectangle and add them together
Kuoministers
  • Kuoministers
and sorry this has nothing to do with special triangles
Kuoministers
  • Kuoministers
ill complete it for you... (hope you can understand this) the bottom of the rectangle is equal to 6 ( 10-4) the length is \[\sqrt{48}\] so its \[\sqrt{48}\] * 6 which is \[24\sqrt{3}\] so now we add these area together which is \[32\sqrt{3}\]
Kuoministers
  • Kuoministers
do you understand it if you dont ill explain it again :)
anonymous
  • anonymous
i thought the bottom rectangle was 4?
Kuoministers
  • Kuoministers
It says on the diagram the whole length which is the triangle and rectangle is equal to 10. The bottom of the triangle is 4. So the rectangle is 10-4. which is 6
anonymous
  • anonymous
oh okay! THANK U SO MUCH!:)
Kuoministers
  • Kuoministers
:)
Kuoministers
  • Kuoministers
if you dont mind giving me a medal :) please do
anonymous
  • anonymous
HOW CAN I DO THAT?
Kuoministers
  • Kuoministers
click best response lol
Kuoministers
  • Kuoministers
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anonymous
  • anonymous
OH lol ok i will wait hold up wat do i add to get 32√3 lol
Kuoministers
  • Kuoministers
well the area of the triangle and area of rectangle which is 24 root 3 + 8 root 3
anonymous
  • anonymous
okay thank u!! so much:)

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