Roods and Perches

p.57 (8) A meadow contains 3 acres 2 roods 20 sq. perches, and yields 2¾ tons of hay per acre. Find the yield of hay from the whole field.

Here is the area table:
144 sq. inches = 1 sq. foot;
9 sq. ft. = 1 sq. yard;
30¼ sq. yd. = 1 sq. perch;
40 sq. pers. = 1 rood;
4 rds. = 1 acre;
640 acres = 1 sq. mile.


This derives in part from the length table:
12 ins. = 1 ft.
3 ft. = 1 yd.
5½ yds. = 1 perch
40 pers. = 1 furlong
8 furs. = 1 mile.