GRE Exam Numerical Ability Geometry

The area of an equilateral triangle is √3 times the area of an isosceles triangle. If the three sides of the isosceles triangle are 5, 5 and 6. Find the length of each side of the equilateral triangle.
A) 4 B) 6 C) 4√3 D) 8 E) 6√ 3

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GRE Other Question

In how many different ways can the letters of the word SINISTER be arranged such that two S are never together? A)2520 B)7560 C)8280 D)10080 0.5(y-x) = -4 and x² - y² = 40. What is the sum of x and y ? A) 6 B) 5 C) -9 D) -5