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Scoretop 6 - Question 9

Expert replies
by akay » Thu Sep 27, 2007 2:38 am
I am nearly but not there again

In the xy-plane, the point (-2, -3) is the center of a circle. The point (-2, 1) lies inside the circle and the point (4, -3) lies outside the circle. If the radius r of the circle is an integer, then r =

A. 6
B. 5
C. 4
D. 3
E. 2
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Source: — Problem Solving |

by camitava » Thu Sep 27, 2007 4:29 am
Akay ur qs is -
In the xy-plane, the point (-2, -3) is the center of a circle. The point (-2, 1) lies inside the circle and the point (4, -3) lies outside the circle. If the radius r of the circle is an integer, then r =

A. 6
B. 5
C. 4
D. 3
E. 2
Now refer the solutiion -
C : (-2,-3)
A : (-2,1)
B : (4,-3)

Now CB = 6
And CA = 4
As A lies in the So the circle and B outside the circle so the radius will be 5 only.
So B is the best option to chose.
Correct me If I am wrong


Regards,

Amitava
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by camitava » Thu Sep 27, 2007 4:29 am
Akay ur qs is -
In the xy-plane, the point (-2, -3) is the center of a circle. The point (-2, 1) lies inside the circle and the point (4, -3) lies outside the circle. If the radius r of the circle is an integer, then r =

A. 6
B. 5
C. 4
D. 3
E. 2
Now refer the solutiion -
C : (-2,-3)
A : (-2,1)
B : (4,-3)

Now CB = 6
And CA = 4
As A lies in the So the circle and B outside the circle so the radius will be 5 only.
So B is the best option to chose.
Attachments
Fig-1.JPG
Correct me If I am wrong


Regards,

Amitava
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by akay » Thu Sep 27, 2007 6:46 am
tks amitava
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