What is the area of a circle with a diameter of 6cm​

The area would be 28.26 centimeters.

the equation for area (for a circle) is pi times r^2. to get r, you would have to divide the diameter by two since the radius is half of the diameter. you would get 3. following that, you would square r, making the 3 a 9.
multiply 3.14 (pi) by 9 (r^2) and you'll get 28.26 centimeters.

21/2 or 5/2

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