There are no miles in any acres, and no acres in any miles.1 square mile = 640 acres
90 acres=0.141 square miles and I am sorry, but I do not know how many miles not squared are in 90 acres.
Acres are area. Miles are length.
There is 0.234375 miles in 150 acres
if you mean square acres to square miles there are 12800 acres
42,000 Acres = 65.625 Square Miles
0.2625 square miles for 168 acres.
0.109375 square miles for 70 acres.
20.3125 square miles for 13,000 acres.
0.035875 square miles in 22.96 acres.