GRE Math Problem 40

Column A	Column B
The sum of the areas of two equilateral triangles whose sides are 10	The area of one equilateral triangle whose sides are 20

Solution for GRE Math Problem 39:
If x was 90, AB would be a hypotenuse in the right isosceles triangle and its value would be .
And for x > 90, AB will be even longer.
Answer: A

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