Question

formula of area of the circle of radius r is___​

Answer 1

Answer:

A= πr2

Step-by-step explanation:

The question was not correctly framed. You can only ask for the area of a circle if the length of its radius is given (assuming the person knows that, pi = 22/7).

The question supposed to be asked this way, “How can I find the area of a circle”?

The person will then give you the formula of finding the area of a circle:

A = pi*r^2

where, pi = 22/7

r = radius of the circle

Answer 2

πr²

π = pie

r = radious

π = 3.1415926...∞

22/7 = 3.142857142857..∞

so by estimation π is taken 22/7

so it become 22/7r²