With this information, you can calculate the quantity of square feet 20 square kilometers is equal to.
¿What is the inverse calculation between 1 square foot and 20 square kilometers?
Performing the inverse calculation of the relationship between units, we obtain that 1 square foot is 4.645152e-09 times 20 square kilometers.
Which is the same to say that 20 square kilometers is 2.1527821e+08 square feet.
Twenty square kilometers equals to two square feet. *Approximation
A square foot is four times twenty square kilometers. *Approximation