1 square mile = 640 acres
An acre is a measure of area whereas mile is a measure of length.acres can, however, be converted into squaremiles which are a measure of area:1 acre = 1/640 sq mi⇒ 74 acre = 74/640 sq mi= 37/320 sq mi= 0.115625 sq mi≈ 0.116 sq mi
1 sq mi=5280ft x 5280ft = 27878400 sq ft/sq mi/ 27,878,400 sq ft/sq mi divided by 640acres/sq mi = 43,560 sq ft /acre 1 acre = 43,560 sq ft
an acre is a measure of area whereas a kilometer is a measure of length, but a square kilometer is a measure of area, so I'll presume you meant square kilometers. 1 acre is approx 1/250 sq km = 0.004 sq km. 1 acre = 1/640 sq mile 1 mile ≈ 8/5 km 1 sq mi = 1 mi x 1 mi ≈ 8/5 km x 8/5 km = 64/25 sq km →1 acre = 1/640 sq mi ≈ 1/640 x 64/25 sq km = 1/250 sq km = 0.004 sq km
1 acre = 43,560 sq ft
1 acre = 6272640 sq inches.
1 acre = 4840 sq yards
1 acre = 43560 sq feet.
Your question is nonsense as:miles are a unit of length; whereasacres are a unit of area.However, if you mean how many SQUARE miles are in 31/2 acres:1 acre = 1/640 sq mi→ 31/2 acres = 31/2 x 1/640 sq mi= 7/1280 sq mi≈ 0.0055 sq mi
14,520 sq ft = 1 acre 4840 sq ft = 1/3 acre
None.A mile is a measure of length in 1-dimensional space while an acre is a measure of area in 2-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
sq sq root of 43500 sq ft / acre = 208.71 ft
1 acre = 4046.86 sq metres (to 2 dp)