1 hectare =10000m2; 1 m2 = 100 square decimeter; 1 square decimeter = 100 square centimeter; 1 cm2 = 100 mm2； 1 cm2 = 100 mm2 =0. 1550 in2; 1 square meter = 10000 square centimeter = 1. 1960 square yard; 1 hectare =15mu =10000m2; 1 mu = 666.67m2; 1 ha =10000m2 = 2.445438+0 1 mu.
Common area units are: square centimeter, square decimeter and square meter. The size of the plane figure occupied by objects is called their area. Area is the size of a plane figure.
Area unit refers to the unit for measuring the surface size of an object. The order from small to large is: mm? (square millimeters), centimeters? (square centimeter), dm? (square decimeter), m? (square meters), huh? (hectares), kilometers? (square kilometers). In the International System of Units (SI), the standard unit area is square meters (m2), and the area is a square area one meter long.
In the International System of Units (SI), the standard unit area is square meters (m2), and the area is a square area one meter long. The shape of an area of three square meters will be the same as that of three such squares. In mathematics, the unit square is defined as 1, and the area of any other shape or surface is a dimensionless real number.