Ambiguous Shaded Region
Geometry
Level
2
If the purple area is \(A \pi,\) what is \(A?\)
Note that the figure shows 2 semicircles whose diameters lie on a common line. The chord \( DE \) of the larger circle is parallel to the diameter, tangent to the smaller circle, and has length \(12.\)
by
Refaat M. Sayed