A gopher has dug holes in opposite corners of a rectangular yard. Starting from its hole in the
southeast corner, the gopher runs the width of the yard, a distance of 7.7 meters, and then
runs the length of the yard, a distance of 6.1 meters, to reach his other hole. Finally, the
gopher returns to the hole from which it started. How far did the gopher run in total? If
necessary, round to the nearest tenth.
