How do you determine the area of a circle? (what is the formula of a circle? )

Formula for the area of a circle is,
pi×radius squared

example,
radius of a circle is 2cm what's the area?use 3.14 as pi

2squared×pi
=2squared×3.14
=12.56cm squared..

hope this helps

The formula to find a circle's area π times (radius)^2 usually expressed as π⋅r^2 where r is the radius of a circle and π is pi or 3.14.For example,what is the area of a circle with a radius of 3.Area=π times 3^2 so 9π.Then multiply 9 times 3.14 to get the area of 28.26.