It is 0.47 inches big Direct Conversion Formula 12 mm* 1 in 25.4 mm = 0.4724409449 in

show me an actual size circle of 3 mm

The radius of a circle is always half of the distance of the diameter. If you have a 24 mm diameter - then the radius would be 12 mm.

24 mm. The diameter is twice the radius.

0.4724" Direct Conversion Formula 12 mm* 1 in 25.4 mm = 0.4724409449 in

42 mm = 42/25.4 inches = 1.65 inches, approx.

The answer will depend on what the 12 mm measures. If the object is 12 mm in diameter, it is 37.7 mm around.

1.2 cm

The circumference of a 40 mm circle is: 126 mm

d = 2r = 12 mm

The circumference of a circle with a diameter of 13 mm is: 40.84 mm

The circumference of a circle with a diameter of 110 mm is 345.58 mm

The circumference of a circle that is 16 mm in diameter is 50.27 mm

The circumference of a circle with a diameter of 55 mm is: 172.8 mm

The diameter of a circle that has a circumference of 113 mm is about 35.97 mm

A circle with a radius of 6 mm has a circumference of 37.7 mm

one inch is 25.4 mm one foot is 12 inches one foot is 12 x 2.54 = 304,8 mm

The radius if the circle is half of its diameter and so 30/2 = 15 mm

A circle with a radius of 50 mm has an area of 7853.98 square mm

Circumference of a circle = π × diameter = π × 80 mm = 80π mm ≈ 251 mm

It's about the size a a 12 year old pinky

It will be a big mistake.

Radius of the circle: 6.28/2*pi = 0.999 mm or about 1 mm

The circumference of the circle with a diameter of 64 mm is 64*pi = about 201 mm

-- Find the circumference of a full circle with a diameter of 12 mm.-- The perimeter of the semi-circle is(1/2 the circumference of the full circle) + (the diameter).