A diameter of 30 millimeters (MM) is equivalent to 3 centimeters or approximately 1.18 inches. To visualize it, it's about the size of a large marble or a small cookie. This measurement is commonly used in various applications, including engineering and manufacturing.
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The volume of a cylinder that is 30mm in diameter and 700mm high is 494,800.84mm3
The diameter of any circle is twice the radius. Since the radius of this circle is 15mm, the diameter is 15mm*2=30mm. 30mm is also 3cm.
Area = pi*152 square mm
Area of the circle: pi*152 = 706.858 square mm to 3 decimal places
In terms of length, 30mm is greater than 3cm. This is because 1cm is equal to 10mm. Therefore, 3cm is equivalent to 30mm.