Convert from rood to square kilometer

Unit Definition (rood)
The rood is a a traditional unit of area used to measure land. A rood is the area of a narrow strip of land one furlong (40 rods, or 660 feet) long and one rod (16.5 feet) wide. Thus the rood is equal to 40 square rods (or perches), which equals 1210 square yards, or 10 890 square feet, or exactly 1/4 acre. That would be the area of a lot 22 yards wide and 55 yards deep, about the size of many suburban lots. One rood is approximately 1011.714 square meters, or 0.101 171 4 hectare.

Unit Definition (square kilometer)
The square kilometer is a common metric unit of area. One square kilometer equals 100 hectares, 10E6 square meters, approximately 247.105 acres, or approximately 0.386 102 square mile.