SAT/ACT Prep Practice Problems

SAT, ACT, New SAT, PSAT  and SAT Subject Test Practice Problems are provided for students of and others.

A Geometry Problem for SAT/PSAT/ACT Prep. (Hard). Target Time. 35-50 seconds.

The figure below shows three concentric circles.Two equilateral triangles STU and PQR are inscribed in the largest and the middle circles respectively; PQR also circumscribes the smallest circle.The regions between the triangles STU and PQR and their inscribed circles are shaded blue. What is the ratio of the total blue area to total white area within the largest circle?

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