Chapter 9.3, Problem 229E

A decorator decides to use square tiles as an accent strip in the design of a new shower, but she wants to rotate the tiles to look like diamonds. She will use 9 large tiles that measure 8 inches on a side and 8 small tiles that measure 2 inches on a side. $9\left(8\sqrt{2}\right)+8\left(2\sqrt{2}\right)$ . Determine the width of the accent strip by simplifying the expression $9\left(8\sqrt{2}\right)+8\left(2\sqrt{2}\right)$ . (Round to the nearest tenth of an inch.)