The answer will depend on the units used for 300 and 275: inches, feet, yards, metres? Since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
3.49 acres
1.2144168 ACRES.
1.107 acres, approx.
A lot that is 300 feet by 80 feet is equal to 0.55 acres.
50,000 square feet is 1.15 acres.
110' by 112' equates to 0.283 acres.
20,701 square feet is ~0.48 acres.
42,336 square feet is 0.97 acres.
16,500 square feet is ~0.38 acres.
8,925 square feet is 0.2 acres.
30,855 square feet is 0.71 acres.
13,674 square feet is ~0.31 acres.