A quarter has a diameter of approximately 24 millimeters. What is the area of the quarter?

Did I work this right?
A= 3.14 (12)
A=3.14 (144)
A-452.16 mm

Thanks

3 answers

Right -- but be sure you say mm squared.
A quarter has a diameter of approximately 24 millimeters. What is the approximate area of the quarter?
what is the area