Final answer:
It takes 640 acres to equal 1 square mile. Acres are part of the US customary units of land measure and are crucial when dealing with land division and real estate. The correct answer is option a) Acres
Step-by-step explanation:
The question asks how many of a certain unit of land measure are required to make up 1 square mile. The correct answer is acres, as it takes 640 acres to equal 1 square mile. This measure of land is rooted in US customary units and is commonly used in land measurement and real estate. The township system, used historically in the division of land, featured townships six miles wide and divided into 36 sections.
A few relevant conversions between different units of land measure include: 1 acre is equivalent to approximately 4.05 × 10³ meters squared (m²), and 1 square foot is 9.29 × 10⁻² m². Understanding these units and conversions is critical when working with maps, property development, and land management.
For example, in exercises related to landscaping, property sizes are often provided in acres, and formulas may be given to calculate the number of acres left to mow based on the number of hours worked. Moreover, understanding land measurements in acres can provide historical context to the size and productivity of farms in different eras.