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Hello!
The formula for the area of a circle is:
A = 
x r²
I m confused where is x and where is multiply sign
Any graph is defined by a given function. A graph of x +y =3, may be described as a line joining points such the sum of x-coordinate and the y-coordinate is 3. These are points such as (1,2), (2,1), (3,0) and so on such that the satisfy the equation of the line.
