## Elementary Geometry for College Students (7th Edition)

Let the distance from chord AB to point O be x. Let the distance from chord CD to point O be y. x$^2$=10$^2$-6$^2$ x$^2$=64 x=8 y$^2$=10$^2$-5$^2$ y$^2$=75 y=5$\sqrt 3$ y-x=5$\sqrt 3$-8$\approx$.66