A

**square mile is a square**that is 1**mile on each side**.**Square miles**are commonly used to measure large areas of land.Similarly, it is asked, how many miles is 1 square mile?

For instance, 20

**miles square**(20 × 20**miles**) has an area equal to 400**square miles**; a rectangle of 10 × 40**miles**likewise has an area of 400**square miles**, but it is not 20**miles square**.**One square mile**is equal to: 4,014,489,600**square**inches. 27,878,400**square**feet.Beside above, what a square mile looks like?

One

**square mile is**equal to: 4,014,489,600**square**inches 27,878,400**square**feet Officially, it**is**43,560**square**feet, and a football field**is**48,000**square**feet. 1**mile**by 1**mile is**a**square mile**. The Jefferson Grid offers yet another beautiful perspective: what one**square mile looks like**around the globe.How long is an acre in miles?

The acre is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660

**feet**), which is exactly equal to 10 square chains, ?^{1}⁄_{640}of a square mile, or 43,560 square**feet**, and approximately 4,047 m^{2}, or about 40% of a hectare.Why is it called the Square Mile?

The nickname 'The

**Square Mile**' appears to be a Victorian invention — the earliest reference we can find is from the 1860s. The City of London (AKA the**Square Mile**) in 1870. The old Roman/medieval wall is shown as a red line. Adapted from a map by Doc77can under creative commons licence.