![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The square is inscribed in circle.
\The circumference of the circle is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=991246328f9859345275c77ea8c6f63f.png\")
.
The circumference of a circle is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ce144da22e585df1ce5a4c88b9220d20.png\")
, where ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e7e45144a5880b09f4ba35ecfa2e0a2b.png\")
is the diameter of the circle.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5f748dc80ad062dc3a68d59d4ed8f0a5.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bf4065d0e45b5ff00a53b8b131305649.png\")
.
The diagonal of the square is diameter of the circle.
\Therefore, diagonal of the square is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0505da0e7d31fab4d0f92327fc13e577.png\")
.
Option D is correct.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Option D is correct.