how many acres are in the world that you can grow food on i need a estimate.?
106931
um all of them they just need the right type of attention and care
485829
ok, so 1 hectare = 2.47105381 acres\nand 1 Acre = 4047 square meters\nYou better check out this link it's useful and helpful http://www.towersurveys.co.uk/Amendments140304/Convertme.htm
531768
Each adult brown bear (or grizzly) can require up to several hundred square miles of range to feed itself.    There just isn't that much open space left in the lower 48.  We keep crowding the open spaces with development, building roads into the wilderness and logging thus reducing the huge areas these magnificent creatures require.
1150077
Any length greater or equal the circumference of a 1-acre circle. \n\nCalculate the acre as square feet, square yards or square meters.\n\nDivide by pi and calculate the square root to get the radius, then multiply by 2 pi for the circle circumference.
570610
1 Acre = 43,560 square feet.  An acre can be any length by width as long as the total square footage equals 43,560, if it was a perfect square it would be the square root of 43560 = 208.710326 x 208.710326 feet.
1077695
Check the usda website
372831
irrigate - 1.8 million hectares\n\nsorry that's all
858276
Currently world population is approximately 6.5 billion. \n\nLets assume one person will eat up 2.5 m²\nSo 6.5 billion people will require 1.625 × 10⁹ m² of area ( if all of us stood side by side ).\n\nRussia has a total area of 17,075,400 × 10⁶ m² , with 13% of water.\nSo the total land area in Russia is 1.4855598 × 10¹³ m²\n\nIf we stuff all human beings into Russia ( ignoring the landscape), it will only eats up 0.0109386374 % of Russia!\n\nCorrect me if I made mistake. Thanks! ^^
499461
43560 sq feet, do a google search on "square feet per acre", it shows you, it's really neat!  (Square yards per acre works to, 4840 square yards).
229493
One hectare = 2.471 acres
731636
people (you, me, everyone), plants, animals, or anything on this world that can grew.
745969
6000 acres is equal to 9.37 square miles\nUse this site for all your conversion needs..\nhttp://www.sciencemadesimple.net/area.php
1111685
What area of ag?  I'm getting a B.S. in Interdisciplinary Agriculture and did fairly well in courses.  Let me know.
217265
depends on the number of people standing in that acre
1036944
It would be different from country to country, but I think you have the basics as to what they would probably do. The geography and the social structure of the area would play a big part as to what would be grown in the soil and what livestock they would raise. Here are some links for you to check out:
15340
Earth has a surface area of 196,940,400 square miles, slightly less than a perfect ball with a diameter of 7913.5 miles The surface area of the seven continents and all the islands of the world is about 57 million miles, while the total area of the six habitable continents (Antarctica excluded) is around 52 million square miles. \n\nThe human population on earth has crossed six billion. If we distribute all the exposed land evenly among all mankind, 133 people would have to share one square mile. What that means is that every single person on Earth, man woman and child would have close to five acres of land for his or her use. More precisely, each person would get 209,000 square feet of land, or a square plot of land 457 feet on each side. \n\nNot all this land can be used beneficially however. A significant portion of the Earth's exposed land is unhabitable or cannot be used for any agricultural purpose. Large portions lie in the far north. Large portions are extremely arid. Large portions are very mountainous. In sum, only about one fourth of all the land on earth, or somewhat more than 12 million square miles, is arable. \n\nToday, over half of the arable land in the world is in fact not under cultivation. Bringing the unused land into service in many cases would require huge investments of money and effort, and would do considerable damage to the environment. For example, only about 28% of the arable land on the African continent is used for growing crops. Immense tracts of forests or jungles would have to be cleared to bring the rest of the arable land on that continent to productive use. \n\nThus, only about one eighth of each imaginary plot of land distributed to each person is land which is under cultivation. In effect, each person has a piece of land about 26,000 square feet (a square 161 feet on each side or just a bit more than ½ an acre) at his or her disposal on which to grow all that he or she needs.
515613
Yes.  I have lived in Ak and the minuscule amount of land required is far outdone by the MILLIONS of acreage that would go untouched.  Does anyone realize exactly how large Alaska is?  30 acres is a pinprick on almost any map.  Think of the revenue from jobs and the boost to the Alaskan economy!  It is a beautiful and wild place, but let's be realistic... using 30 acres would in no way jeopardize the balance of wildlife.