A circle of radius 1 unit has an equilateral triangle PQR inscribed in it.
The points S and T are points on the circle such that QRST is a rectangle.
The area, in square units, of the rectangle is what?
triangle side a = √ [ A / (√ 3)/ 4)]
circle radius r = [a/2 * tan(30º)] * 2
rectangle area A = a * r