Question

$1$ chain = ………………………………. metres.
(A). 20.1168
(B). 21.1168
(C). 15.1168
(D). 18.1168

Answer 1

- Hint: To solve this question, firstly we should learn about the Chain, for which purpose it is used and other concepts behind it. We will also learn what alteration will be caused to the quantities when there is conversion of units. By using this knowledge, we will be easily approaching our answer.

Complete step-by-step solution -
Chains are the measuring instrument used in doing surveys of land. It is formed by the 100 links of 4mm galvanized mild steel wire. These rings are joined together and provide flexibility to the chains. In today's life we require some measuring units. To do the work precisely and accurately measurements are done. Nowadays, everywhere measurements are used. So as in engineering it holds a greater role in construction or surveying. Various units of measurements such as meters, centimeters, feets etc. so that various instruments are used in the measurements of any entity.

A chain is the unit of length. It measures 66 feet =20.1168 m. There are 80 chains in one mile. It is a part of the imperial, united states customary and Spanish system. People generally used it to measure the land. The chain is abbreviated as (ch). 1 chain =20.1168m.

So, the correct answer is option A – 20.1168

Note: The chain is a measuring unit for length which is equal to 66 feet (22 yards). It is divided into 100 links or 4 rods. There are 10 chains making a furlong, and 80 chains in one statute mile. It measures 66 feet = 20.1168 m. 1-acre area is the area of 10 square chains.