Question

.

Divide: 49.712 ÷ 1000
None of these is correct.
49,712
0.049712
0.49712

Answer 1

first your going to to change the number to look like this 1000÷ 49.712 and your answer is going to be 20.1158673962 or just 20.1

Explanation:

Answer 2

A square mile = 27,878,400 square feet

A square mile also = 640 acres.

31,580/.75 = 43,440 persons per square mile

That is 27,878,400/43,440 = ~642 square feet per person so each person has a square approximately 25 feet on each side.

43440/640 = ~ 68 people per acre

This is a fairly dense population density by US standards. Of course if housing were constructed in high rise structures located on a couple of acres, there would be a comfortable area of open space.