Well, darling, a 2 mm circle looks like a tiny dot, barely visible to the naked eye. It's smaller than a grain of sand, so good luck trying to spot it without a magnifying glass. Hope that clears things up for you, sugar.
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13 mm. The radius of a circle is 1/2 of the diameter.
If the diameter of a circle is 5.4mm, then the radius is 2.7 mm. The formula for the area of a circle is PIr^2. So, the area is then 22.9 mm2.
If the diameter is 25 mm then the circumference is 78.54 mm.
If the diameter of a circle is 5.4mm, then the radius is 2.7 mm. The formula for the area of a circle is PIr^2. So, the area is then 22.9 mm2.
Well, darling, the circumference of a circle is calculated using the formula C = 2πr, where r is the radius. Plug in the radius of 4 mm, and you get a circumference of 8π mm, or approximately 25.13 mm. So, there you have it, sugar, the circumference of a circle with a radius of 4 mm.