aditi2013 wrote:

Is the perimeter of triangle T greater than the perimeter of square S?

(1) The length of the longest side of T is twice the length of a side of S.

(2) T is isosceles.

Question is if sum of three sides of triangle> sum of 4 sides of square or 4S

(1) The length of the longest side of T is twice the length of a side of S.

Length of longest side = 2S (if length of side of square= S)

Length of longest side +length of other two sides

2S + >2S (Sum of two sides of triangle is always > third side)

>4S

Hence Sufficient.

(2) T is isosceles.

Not sufficient

A is the answer

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