UNITS OF SURFACE OR SQUARE MEASURE
SURFACE OR SQUARE MEASURE

144 square inches (sq. in.) = 1 square foot (sq. ft.)

9 square feet

30 square yards

160 square rods

640 acres

10 square chains

=

= 1 square yard (sq. yd.)

=

= 1

=

=

1 acre (A.)

1 square mile (sq. mi.)

1 acre; 1 acre = 4840 square yards

A township is 6 mi. square, and contains 36 sq. mi. It is divided into 36 sections, each 1 mi. square.

UNITS OF VOLUME

CUBIC OR VOLUME MEASURE

1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.)
27 cubic feet (cu. ft.) = 1 cubic yard (cu. yd.)

A cord is a pile 8 ft. long, 4 ft. wide, and 4 ft. high. It contains 128 cu. ft. A cubic yard of earth is called a load.

February has 28 or 29 days; April, June, September, and November, 30 days each; the other months, 31 days each.

Wheat, beans, clover seed, and potatoes each weigh 60 lb. to the bushel; corn, rye, and coarse salt, 56 lb.; barley, 48 lb.; and oats, 32 lb.