There is no equivalence.
A foot is a measure of length or distance 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, conversion from one to the other is not valid without some addition information.
Miles are a unit of length whereas acres are a unit of area.
As such your question makes no sense.
I'll assume you meant:
How many square miles are in twenty acres?
640 acres = 1 square miles
⇒ 20 acres = 20 ÷ 640 square miles
= 1/32 square miles
= 0.03125 square miles
The question, as stated, cannot be answered sensibly. An acre is a measure of area, with dimensions [L2], so that an acre square is a measure of "area", in 4-dimensional hyperspace, with dimensions [L4]! A foot, by contrast, is a measure of distance, with dimensions [L].
The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
Twenty acres is the same length as 1390 yards. It is also equal in length to 4,170 feet, or 1,650 feet less than a mile.
20 acres = 871,200 square feet
20 acres = 871,200ft²
20 acres is 871,200 square feet.
20 acres = 0.03125 square mile
if you mean square acres to square miles there are 12800 acres
'Square acres' is redundant. Just say acres. One square mile has 640 acres. 20 acres is 1/32 of a square mile
How many hectares is found in 20 acres?
Answer: 20 hec = 49.4210 acres
You multiply the two dimensions to get the area. In this case the room could be 1 foot by 220 feet, or more likely something like 11 feet by 20 feet.
20 square miles = 12,800 acres.
if you mean square acres to square miles there are 12800 acres
20,000 Acres = 31.25 Square Miles
'Square acres' is redundant. Just say acres. One square mile has 640 acres. 20 acres is 1/32 of a square mile
As asked, it is impossible to answer as acres are a measure of area (and are a square unit) whereas miles are a measure of length (and a linear unit). However, if you meant: are 100000 acres less than 20 SQUARE miles, then: Convert to the same units, then a comparison can be made: 1 square mile = 640 acres → 20 square miles = 20 x 640 acres = 12,800 acres < 100,000 acres → No, 100,000 acres are not less than 20 square miles.
20 acres = 0.03125 square miles.
20 acres = 96,800 square yards.
20 acres is 871,200 square feet.
871,200
871,200 ft2 equates to 20 acres.
1 mile = 5,280 feet43,560 square feet = 1 acreArea = (20 x 5,280) x (100) = 10,560,000 square feet = 242.42 acres (rounded)
871,200 square feet.