enigma123 wrote:

Is the perimeter of equilateral triangle T equal to the circumference of circle C ?

(1) The sum of the lengths of a side of T and the radius of C is 9.

(2) The length of a side of T is equal to the diameter of C.

How come the answer is B?

i hope to try n explain....plz correct me if i am wrong...

P=3t where t is the side of the triangle

C=2pir where r is radius...

1. t+r = 9

clearly not sufficient

2. t=r

so 3r = 2pir...definately no...Hence B along is sufficient to tell that the perimeter is not equal to Circumference

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Regards,

Harsha

Note: Give me kudos if my approach is right , else help me understand where i am missing.. I want to bell the GMAT Cat

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