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Q: How do you work out the circumferance if the diameter is 100mm?

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diameter x pi

15.92mm

The circumference of a circle with a diameter of 31.8mm is about 100mm (99.990265mm)

36/pi = 11.4591559 inches

Circumference equals Diameter times Pi, OR Diameter equals (Circumference)/(Pi). In this case, Diameter equals (130mm)/(Pi or 3.14159) equals 41.38mm

Related questions

circumference/pi = diameter

diameter x pi

The diameter is 14 / 3.141592654 = 4.4563384 inches.

15.92mm

The formula is pi multiplied by the diameter

The volume in liters of a cylinder with a diameter of 2000mm and a depth of 100mm is: 314 liters.

The volume in liters of a 100mm long by 50mm diameter cylinder is: 0.196 liters.

circumference = pi*diameter so diameter = circumference/pi = 19.1 metres.

If the diameter is known, don't bother measuring the circumference.Simply multiply the diameter by 'pi'.

You get it by multiplying the radius by 2 or dividing circumferance by 3

The circumference of a circle with a diameter of 31.8mm is about 100mm (99.990265mm)

you multiplay the radius by 2 or divide the circumferance by 3

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