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Quadrant Problem_help needed

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by sanalnnair » Wed Sep 15, 2010 8:17 pm
Hi, Can anyone help me to solve this circumference problem?? I am having a silly doubt here.. I have attached the diagram in the word attachment. please go through it and help me.



I had gone for calculating the circumference of the sector which comes out to be (PIE * r)/2, which is 1100/7 = 157.

Now how do I do the remaining? The answer is (C). Circumference means the whole length across the quadrant. Then how do I add 200 + 157 to get C as the answer. Please help.
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by limestone » Wed Sep 15, 2010 8:25 pm
The radius is : 100, hence the diameter = 200, the parimeter of the circle : d*Pi = 200 * 3.14 = 628
1/4 of the circle's length = 628/4 = 157.
Length of the fence: 100+100+157 =357
C is the answer.
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by brijesh » Wed Sep 15, 2010 8:28 pm
sanalnnair wrote:Hi, Can anyone help me to solve this circumference problem?? I am having a silly doubt here.. I have attached the diagram in the word attachment. please go through it and help me.



I had gone for calculating the circumference of the sector which comes out to be (PIE * r)/2, which is 1100/7 = 157.

Now how do I do the remaining? The answer is (C). Circumference means the whole length across the quadrant. Then how do I add 200 + 157 to get C as the answer. Please help.
Add 200 to your ans- 157+(100+100)-- (the two sides-fencing is all around)
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by sanalnnair » Wed Sep 15, 2010 8:30 pm
@limestone, @brijesh, thanks a lot.. I am little confused today.. Tomorrow i will be appearing for gmat.. may be its because of anxiety..
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