A triangular sail XYZ XYZ\,XYZ is designed such that the interior angle at X X\,X is 68∘ 68^\circ\,68∘ and the interior angle at Z Z\,Z is 52∘52^\circ52∘. The length of the side XY XY\,XY is 8.5 m.
Work out the area of the sail XYZXYZXYZ. Give your answer to 1 decimal place.