Elementary arithmetic, with brief notices of its history... by Robert Potts.

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long; what weight of this thread would reach round the earth, a distance of 25,000 miles?
7. If a yard contain 36 inches or 12 palms or 4 spans or 2 cubits,
express a mile in palms, spans, cubits, respectively.
8. Three French kilometres are as much under two English miles
as five kilometres are above three miles; find how many yards make a
kilometre.
XIII.
1. If the magnitude of the lineal unit be given, what are the corresponding units of area and volume? Exemplify, when the lineal unit
is 12 inches.
2. Reduce 6,698,411 square inches to square yards, feet, and inches.
Reverse the process.
3. Reduce 49 acres, 28 poles, 10 yards, 112 inches to inches.
4. How many square yards are there in 139,968 square inches?
5. Divide a square foot by 18 lineal inches.
6. How many square inches are there in the area of a rectangular
parallelogram whose adjacent sides are respectively 3 feet 4 inches and
5 feet 7 inches?
XIV.
1. A rectangular court, the sides of which are 300 feet and 200
feet, has a walk 20 feet wide running round it; what is the area of
the walk?
2. Find the area of a field in acres and yards whose sides are respectively 50 chains 40 links and 50 chains 25 links.
3. How many acres of land would be required for a road 50 miles
long and 22 yards broad?
4. If the hide of land mentioned in Domesday Book contained
4 plow lands, and one plow land 4 yard lands, and the yard land 30
acres, find how many acres were estimated to the hide of land.
5. How many allotments can be made from 25 acres of land,
allowing 1000 square yards to each allotment?
6. Find the number of men required for forming a hollow square
four deep, having 100 men on each side.
7. If a halfpenny piece be one inch in diameter how many can be
laid in rows touching each other on a table which is 7 feet 6 inches
long and 3 feet 4 inches wide; and what is their amount?
8. A labourer engaged to reap a field of corn for 5s. an acre, but
leaving 6 acres not reaped, he received ~2 10s.; of how many acres did
the field consist?
9. What would be the cost of painting the walls and ceiling of a
room whose height is 10 feet, breadth 15 feet, and length 24 feet, at
6d. a square foot?
10. If eight strips of carpet 39 inches wide cover a floor, how wide
must a carpet be in order that 6 strips may cover the floor?