Turkish NMO First Round - 1999 P-09 (Geometry)
Source:
July 3, 2012
geometrytrigonometryrectangle
Problem Statement
Find the area of inscribed convex octagon, if the length of four sides is , and length of other four sides is .(A)\ 120 \qquad(B)\ 24 \plus{} 68\sqrt {2} \qquad(C)\ 88\sqrt {2} \qquad(D)\ 124 \qquad(E)\ 72\sqrt {3}