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# what is the area of triangle abc

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what is the area of triangle abc [#permalink]  18 Feb 2006, 16:33
what is the area of triangle abc?
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Manager
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Is it 3.5 ? ... if its correct i will write the explanation .
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i got 3.5 too. found the area of the space around the triangle and subtracted it from the area of the square.
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Re: figures [#permalink]  18 Feb 2006, 22:23
=(4+1/2+8+6) - (10+5) = 3.5
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Can you please explain the solution? I do not see any square in the figure.
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Sirisha wrote:
Can you please explain the solution? I do not see any square in the figure.
See attached pic.

Another method is. (Area of ABDOrigin + Area of ACEOrigin) - Area of BCED
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