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Official Guide - Quant Review problem #85

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Newbie | Next Rank: 10 Posts
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by samstone » Tue Jul 31, 2007 5:49 pm
Hi,
Can someone please give a detailed explanation of the answer for this question? I am still unsure of the explanation given in the book. Thanks very much. :?
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by RM » Tue Jul 31, 2007 7:44 pm
The area of triangle = 1/2*base*height

Base of triangle TR = TO - RO = c - 1
Height of triangle = Length of perpendicular drawn from S to base RT,
which is same as y-coordinate of point S i.e. b

Area = 1/2(c-1)(b). Choice B
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by lalitgmat » Thu Aug 02, 2007 8:31 pm
What made you confirm its a Right-angled triangle.
The question mentions in rectangular coordinate system..
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by g_beatthegmat » Thu Aug 02, 2007 11:30 pm
RM:
Area = 1/2(c-1)(b). Choice B
RM is absolutely correct. The area formula 0.5*base*altitude is not only for a right angled triangle, but in fact is a general triangle area formula, which can be applied on all the triangles.
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