Are 100000 acres less than 20 miles?

Answer 1

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.