This question cannot be answered sensibly. An acre (not acer) is a measure of area, with dimensions [L2]. A foot is a measure of distance, with dimensions [L]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
1.63 acres (rounded)
136 meters = 446.19 feet.
136 meters = 446.19 feet.
136 centimeters = 4.46 feet.
1.18 acres = 51,400.8 sq feet.
3.09917 acres.
20.89 acres.
How many acres are 310 feet * 630 feet
108,000 square feet or 2.479 acres.
About 0.17 acres.
5.36 acres.
0.505 acres.