humtum0 wrote:
Attachment:
fence.gif
The figure shown represents a piece of land that is in the shape of a quarter circle. If the land is enclosed by a fence, which of the following is closest to the length, in feet, of the fence?
(A) 278
(B) 341
(C) 357
(D) 400
(E) 441
OBSERVATION on this Question
i couldn't understand this problem, i saw this problem while i was doing gmat prep 2, i was kind of doing bad in prep test, and the moment i saw this problem, i thought fencing hummm..that seems an easy one--i have to add 100 + 100 + 1/4 of the circumference.
so i quickly applied this formula 2pie r == 2pie100 =200 pie, so i knew i needed one forth of it, so 1/4*200= 50, so far i was kinda going good, but then 100+100+50 = 250 ( and i tried to read the question again but it didn't help, i tried checking my calculation but wasted my time,i didn't want to skip this question cause i knew it was a low difficulty problem, so on actual GMAT the penalty would have been higher, because of that i was little stubborn (though i shouldn't have been),but i was feeling anxious and frustrated at the same time so i ended the test realizing that i had fallen prey to a trap of GMAT test makers,
And now in introspect i see how close i was solving this problem all i had to do was to multiply 50*pie(3.14)= 157 + 200=370 answer C.
But i confess, GMAT was able to throw me off balance by an easy problem, and i got panicked, hope so i won't do it in the real test.