How many miles in 230 square miles?

Answer 1

The question, as stated, cannot be answered sensibly. A square mile is a measure of area, with dimensions [L2]. A mile 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.

Answer 2

There are 1 mile in length for every 1 square mile area, so in 230 square miles, there are 230 miles.