The question, as stated, cannot be answered sensibly. An acre is a measure of area, with dimensions [L2]. A foot is a measure of distance, with dimensions [L]. The two measure different things and elementary dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
1.18 acres = 51,400.8 sq feet.
20.89 acres.
3.09917 acres.
How many acres are 310 feet * 630 feet
108,000 square feet or 2.479 acres.
18.59 acres
About 17.2 acres.
2.083 acres.
2.75 acres.
18.2 acres.
5 acres.
0.98 acres.