A rectangle is inscribed in a circle, such that each vertex of the rectangle lies on the....

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Nonadaptive Digital SAT Practice Test 5, Section 2, Module 2, Question 21:

A rectangle is inscribed in a circle, such that each vertex of the rectangle lies on the circumference of the circle. The diagonal of the rectangle is twice the length of the shortest side of the rectangle. The area of the rectangle is 1,089sqrt3 square units. What is the length, in units, of the diameter of the circle?

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