1. Using the given conversion factors, we find (a) the distance d in rods to be d = furlongs = ( furlongs )( m furlong ) m rod = 160 rods, (b) and that distance in chains to be d = ( furlongs )( m furlong ) m chain = 40 chains. .2. The conversion factors 1 gry = 1/10 line , 1 line=1/12 inch and 1 point = 1/72 inch imply that 1 gry = (1/10)(1/12)(72 points) = point. Thus, 1 gry2 = ( point)2 = point2, which means that gry 2 = point 2 . .3