A = pi r^(2)
r = 6mm
pi ~ 3.14
A = 3.14 *(6mm)^(2)
A = 3.14 * 36 mm^(2)
A = 113.04 mm^(2)
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Area of a circle with radius r is pi*r2 where pi is the irrational number approximately equal to 3.14159. You now have all the information required to answer this and other similar questions.
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