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by ektamatta » Tue May 27, 2008 8:05 pm
The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is , what is the length of line segment RU?

A. 4/3
B. 8/3
C. 3
D. 4
E. 6
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by ksh » Tue May 27, 2008 10:42 pm
Hi ektamatta,
please complete your question. seems u have left something !
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by calande » Wed May 28, 2008 12:55 am
Easy, circumference will be 2(r)Pi, that's 8Pi.

RTU + RU = 8Pi so as soon as we know one, we can find the other :)
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by getneonow » Wed May 28, 2008 1:02 am
calande wrote:Easy, circumference will be 2(r)Pi, that's 8Pi.

RTU + RU = 8Pi so as soon as we know one, we can find the other :)
@calande..you interpreted it totally wrong..!!

arc RTU (major/minor) + arc RU(minor/major) = 8Pi (assuming T lies in between R and U..) but not RTU + RU = 8Pi



we have been asked the length of line segment RU but not the length of arc RU!!

When arc RTU length is given, we can definitely find line RU length but for that we need one more info in the qn which is missing.


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by calande » Wed May 28, 2008 1:07 am
"Line segment"... My bad, I read too fast :oops:
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