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Area of a circle = pi*r2 , where pi = 3.14 and r is the radius of the circle.

We have diameter(d) = 12mm so, radius(r) = d/2 = 6mm

On putting the values we get

Area = 3.14*62 = 3.14*36 = 113mm2

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Q: What is the area of a circle with a diameter of 12 mm?
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