How many chains are in 1 furlong?

How many chains are in 1 furlong?

• A. 5 chains
• B. 10 chains
• C. 20 chains
• D. 8 chains

Answer: (B)

This question hinges on the relationship between surveying units: rods, chains, and furlongs. In this system, a chain is 66 feet and a furlong is 660 feet. Dividing the furlong by the chain gives 660 ÷ 66 = 10, so there are 10 chains in a furlong. You can also see it via rods: a chain equals 4 rods, and a furlong equals 40 rods, so 40 ÷ 4 = 10 chains. These units were historically used in land measurement, with 1 furlong = 40 rods = 10 chains = 1/8 mile.

This question hinges on the relationship between surveying units: rods, chains, and furlongs. In this system, a chain is 66 feet and a furlong is 660 feet. Dividing the furlong by the chain gives 660 ÷ 66 = 10, so there are 10 chains in a furlong. You can also see it via rods: a chain equals 4 rods, and a furlong equals 40 rods, so 40 ÷ 4 = 10 chains. These units were historically used in land measurement, with 1 furlong = 40 rods = 10 chains = 1/8 mile.