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(10,0),(0,10),(-10,0),(0,-10) This are the four points which acn have max area.
so diagonal of this square is of lengh 20..
20^2 = r^2 +r^2
400 = 2r^2
r^2 = area = 200..
That's exactly what I get. IMO, the best way to solve this kind of problems is to calculate the points where the area cuts the axis.
I think this problem has already come up in a recent post.
mates, please visit my profile and leave comments http://gmatclub.com/forum/johnlewis1980-s-profile-feedback-is-more-than-welcome-80538.html
I'm not linked to GMAT questions anymore, so, if you need something, please PM me
I'm already focused on my application package
My experience in my second attempt http://gmatclub.com/forum/p544312#p544312 My experience in my third attempt http://gmatclub.com/forum/630-q-47-v-28-engineer-non-native-speaker-my-experience-78215.html#p588275
Re: Equation |x/2| + |y/2| = 5 encloses a certain region on [#permalink]
17 Mar 2016, 02:52
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