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# ratio of areas of triangles

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VP
Joined: 18 May 2008
Posts: 1287
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ratio of areas of triangles [#permalink]

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31 May 2008, 05:53
1
KUDOS
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Can anyone help me with solution?
Im doubtful as i getting answer as 4
Attachments

similar triangles.JPG [ 18.13 KiB | Viewed 953 times ]

Last edited by ritula on 31 May 2008, 06:49, edited 1 time in total.
Manager
Joined: 28 May 2008
Posts: 94
Followers: 2

Kudos [?]: 8 [0], given: 0

Re: ratio of areas of triangles [#permalink]

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31 May 2008, 06:19
Nihit wrote:
I am getting 4:1

Yes. I think it should be 4:1
Both the triangles are similar.
Therefore the sides are in the ratio 6:3 which is 2:1
Therefore the ratio of areas wil be twice of this.ie 4:1

Cheers !
Director
Joined: 14 Oct 2007
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Location: Oxford
Schools: Oxford'10
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Re: ratio of areas of triangles [#permalink]

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31 May 2008, 15:46
Hi ritula,

please don't put the answer together with the questions. You will find more people respond to the question if the spoiler isn't given and not giving the answer too early also promtoes differnt debates and multiple ways to solve the problem will emerge.

cheers,

buff

+1 for posting however!!!

p.s i am getting 4:1 to this. for 2d shapes of the same proportions, doubling the proportion of an identicle dimension will increase the area 4 times
Manager
Joined: 28 May 2008
Posts: 94
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Kudos [?]: 8 [0], given: 0

Re: ratio of areas of triangles [#permalink]

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01 Jun 2008, 01:08
Hi ritula,

please don't put the answer together with the questions. You will find more people respond to the question if the spoiler isn't given and not giving the answer too early also promtoes differnt debates and multiple ways to solve the problem will emerge.

cheers,

buff

+1 for posting however!!!

p.s i am getting 4:1 to this. for 2d shapes of the same proportions, doubling the proportion of an identicle dimension will increase the area 4 times

Yes, I completely agree.
We should let it be an open debate.
And when you dont put the answers along with the question,you will notice you get better ideas and tips on solving them.
I guess the same goes for all of us.

cheers !
Manager
Joined: 31 Jul 2006
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Re: ratio of areas of triangles [#permalink]

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02 Jun 2008, 21:31
i got 4:1 too. where'd you get this question?
VP
Joined: 18 May 2008
Posts: 1287
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Kudos [?]: 327 [0], given: 0

Re: ratio of areas of triangles [#permalink]

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02 Jun 2008, 22:34
The source of this question is http://www.TCYonline.com.
i got 4:1 too. where'd you get this question?
Current Student
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Re: ratio of areas of triangles [#permalink]

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03 Jun 2008, 08:22
this is gotta be 4...

property of similar triangles the ratio of area is (ratio of sides)^2...

36/9=4
Re: ratio of areas of triangles   [#permalink] 03 Jun 2008, 08:22
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