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# The sides of right triangle ABC are such that the length of

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Manager
Joined: 09 Feb 2013
Posts: 121
The sides of right triangle ABC are such that the length of [#permalink]

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12 Mar 2013, 05:13
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The sides of right triangle ABC are such that the length of side AB is greater than the length of side BC, which itself is greater than the length of side AC. If side AB = 143 and side AC = 55, what is the area of the triangle?

A. 3113
B. 3224
C. 3432
D. 3630
E. 7260
[Reveal] Spoiler: OA

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Last edited by Bunuel on 12 Mar 2013, 05:21, edited 1 time in total.
Edited the question.
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Re: The sides of right triangle ABC are such that the length of [#permalink]

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12 Mar 2013, 05:29
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emmak wrote:
The sides of right triangle ABC are such that the length of side AB is greater than the length of side BC, which itself is greater than the length of side AC. If side AB = 143 and side AC = 55, what is the area of the triangle?

A. 3113
B. 3224
C. 3432
D. 3630
E. 7260

Given that AB>BC>AC. So, AB is the hypotenuse of the triangle.

$$BC=\sqrt{143^2-55^2}=\sqrt{(11*13)^2-(11*5)^2}=11\sqrt{13^2-5^2}=11*12$$.

The area = 1/2*BC*AC = 1/2*(11*12)*55 = 66*55 = 3630.

Answer D.
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Re: The sides of right triangle ABC are such that the length of [#permalink]

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21 Oct 2014, 15:51
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: The sides of right triangle ABC are such that the length of [#permalink]

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22 Nov 2015, 14:18
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: The sides of right triangle ABC are such that the length of [#permalink]

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22 Nov 2015, 18:20
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emmak wrote:
The sides of right triangle ABC are such that the length of side AB is greater than the length of side BC, which itself is greater than the length of side AC. If side AB = 143 and side AC = 55, what is the area of the triangle?

A. 3113
B. 3224
C. 3432
D. 3630
E. 7260

Bunuel's solution is exactly how I would have answered this question.
However, if I had no idea how to answer the question (or if I had only 10 seconds remaining), I still would have guessed D.

Here's why:
Notice that E (7260) is twice as big as D (3630).
Since area of a triangle = ONE-HALF times base times height, answer choice E is a good distractor for people who forget to HALVE the product of the base and height.
So, I'd GUESS D.

Cheers,
Brent
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WE: Management Consulting (Consulting)
Re: The sides of right triangle ABC are such that the length of [#permalink]

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10 May 2016, 21:20
There is a special property for a right triangle which is valid here 5k:12k:13k
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The sides of right triangle ABC are such that the length of [#permalink]

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11 May 2016, 01:55
According to right angle property: sides ratio 5x:12x:13x

Here AC>BC>AB
13>12>5

Here AC =143= 13*11 so X=11 BC=12*11

Area= .5*AB*BC
= .5*55*12*11=3630
The sides of right triangle ABC are such that the length of   [#permalink] 11 May 2016, 01:55
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# The sides of right triangle ABC are such that the length of

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