Unit conversion
1, 1 square kilometer (km?) = 100 hectares (ha) = 247.1 acres (acre) = 0.386 square miles (mile?)
2, 1 square meter (m?) = 10.764 square feet (ft?)
3, 1 metric acres (are) = 100 square meters (m?)
4, 1 hectare (ha) = 15 acres = 1 hm? = 10,000 square meters (m)
5, 1 square meter (m) = 10,000 square meters (m)
6, 1 metre (ha) = 15 acres = 1 hm? = 10,000 square meters (m)
7, 1 hectare (ha) = 15 acres = 1 hm? )
4. 1 hectare (ha) = 15 acres = 1 hm? = 10,000 square meters (m) = 2.471 acres (acre) = 0.01 square kilometers (where h means a hundred meters, and hm? means a hundred meters squared)
5. 1 square mile (mile?) = 2.590 square kilometers (km?)
Expanded Information
The first step in the process of building a house is to make it a home. strong>Expanded Information
Area units refer to units that measure the size of an object's surface. The main ones, in order from smallest to largest, are: mm? (square millimeters), cm? (square centimeters), dm? (square decimeters), m? (square meters), hm? (hectares), and km? (square kilometers). In the International System of Units (SI), the standard unit of area is the square meter (m2), which is the area of a square one meter long.
Area is a quantity that indicates the extent of a two-dimensional figure or shape or plane layer in a plane. Surface area is the analog of a three-dimensional object on a two-dimensional surface.
Area can be understood as the amount of material with a given thickness, and area is necessary to form a model of a shape. The area of a shape can be measured by comparing a fixed-size shape to a square.
Baidu Encyclopedia - Units of Area