Bubble Crash

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I have 40 acres of land. If I can select it to be a perfect square, how long in miles would be one side.?

Please show step by step calcs.

1 acre = 43,560 sq ft
40 acres = 1,742,400 sq ft
square root of (1,742,400 sq ft) = 1,320 ft
1 mile is 5,280 ft.
So that 1,320/5,280 = 1/4 mile.
1,320 ft is exactly a quarter of a mile!

So a square piece of land with 1/4 mile on each side encloses 40 acres.