Square is an operation. For example, the square of a means a×a, and the abbreviation is a? It can also be written as A× A (A (the first power of A multiplied by the first power of A equals the second power of A), for example, 4×4= 16, 8×8=64, and the square sign is 2.

Subtitle answer:

Square = length * width =130cm * 80cm =10400cm * cm.

Extended data:

On the calculation formula of square:

Rectangular: {Rectangular area = length × width}

Square: {Square area = side length × side length}

Parallelogram: {parallelogram area = base × height}

Triangle: {Triangle area = base × height ÷2}

Trapezoid: {Trapezoid area = (upper bottom+lower bottom) × height ÷2}

Circle (perfect circle): {area of circle (perfect circle) = π× radius× radius}

For example:

The area formula of a rectangle is that length times width equals area, and the unit of area is square, not the square area you said. ?

For example, the length and width of a rectangle are 8 meters and 5 meters respectively, and the area of a rectangle is 8 meters *5 meters =40 (square meters).

Unit conversion:1m2 (1m2) =100dm? (100 square decimeter) = 10000 cm? ( 10000 cm2)= 1000000mm？ (1000000 mm2) = 0.0001hectare =0.00000 1km? (0.000001km2) = 0.01hectare = 0.00044 1054 acre = 0.00 1 square mile =10+038.