Question:
# of acres in a square mile

Hi Rita,

A square mile is a region one mile by one mile, and an acre is a plot of land with an area of 43 560 square feet. One mile is 5280 feet and hence a square mile has area 5280 x 5280 = 27 878 400 square feet. The number of acres in a square mile is thus the number of 43 560 square foot plots it will take to cover this area of 27 878 400 square feet.

I hope this helps,
Harley