A square is a special rectangle, and the area formula of the rectangle is the base multiplied by the height. Because all four sides of a square are the same length, the area of a square is the side length multiplied by the side length.
Extended data:
Other graphic area calculation methods
1, bow formula
Let the arc opposite to the bow AB be the arc AB, then:
When the arc AB is minor, then S-bow =S-sector-S △ AOB (A and B are the endpoints of the arc and O is the center of the circle).
When arc AB is a semicircle, then S bow =S sector = 1/2S circle = 1/2×πr2.
When arc AB is the optimal arc, then S-bow =S-sector +S△AOB(A and B are the endpoints of the arc, and O is the center of the circle).
The calculation formula is as follows:
S=nπR2÷360-ah÷2，
S=πR2/2，
S=nπR2÷360+ah÷2 .
2. Elliptic formula
Ellipse area formula: S=πab Ellipse area theorem: The area of an ellipse is equal to π times the product of the major semi-axis length (a) and the minor semi-axis length (b) of an ellipse.
Application example of ellipse area formula
The major axis of an ellipse is 8 cm and the minor axis is 6 cm. Suppose π=3. 14, and find the area of the ellipse.
A: s = π ab = 3.14 * 8 * 6 =150.72 (cm? )