What is Formula?
Examples of formula:
Perimeter of rectangle = 2(length + width)
If the length and width of a rectangle are ‘a’ units and ‘b’ units respectively, the formula of its perimeter is:
P = 2 (a + b)
Area of rectangle = length × width
P = a × b
Perimeter of square = 4 × side length
If the length of the side of a square is ‘a’ units, then its perimeter P is the sum of all its sides.
P = a + a + a + a
P = 4a
Area of square = Side length × side length
If the side length of the square is a units; then its area is:
Area = a × a = a²
Volume of cuboid = length × width × height
Profit = Selling price - cost price
Loss = Cost price - selling price
2x - 3 = 6
x + y = 10
3x - 8x + 9x = 17
These are equations and not formula.