There is a population of 6.848 billion people. There are roughly 57.9 million square miles of land on Earth, of which about 22% are favorbale for agriculture.
Round answer to the nearest person.
There are ___ people/ mile^2 of farmable land.
I DIVIDED 6.848BILL / 57.9MILL & got 118.. but its NOT the answer... what do i do with the 22% HELP
= 6.848billion/(.22*57.9million)
Good eye, 22% does play a key role here.
Out of 57.9 land, ONLY 22% is favorable (farms). Multiply, you get 12.738 million square miles of land.
NOW, try dividing 6.848 billion by 12.738 million. BUT, keep in mind the zeros, because billions are higher than millions.
I got 537.6, but be sure to check your work.
-Hope this helps.
6.848*10^9 people
.22*57.9 *10^6 miles^2
so
[ 6.848/(.22*57.9) ]10^3
=.5376 * 10^3
= 538
Thank you soooo much, y'all made it clear!! @bobpursley @Tony O. @Damon
To calculate the number of people per square mile of farmable land, you need to consider the fact that only 22% of the total land area is favorable for agriculture. Here's how you can find the correct answer:
1. Calculate the total area of farmable land by multiplying the total land area by the percentage of land favorable for agriculture:
Area of farmable land = 57.9 million square miles * (22/100) = 12.738 million square miles.
2. Calculate the number of people per square mile of farmable land by dividing the total population by the area of farmable land:
Number of people per square mile of farmable land = 6.848 billion people / 12.738 million square miles.
Now, to round the answer to the nearest person, follow these steps:
- If the decimal part is less than 0.5, round down.
- If the decimal part is equal to or greater than 0.5, round up.
For example, if the calculated result is 536.272 people per square mile of farmable land:
Since the decimal part, 0.272, is less than 0.5, we round down to get the final answer of approximately 536 people per square mile of farmable land.
Therefore, the answer to your question is approximately 536 people/mile^2 of farmable land.