To find the circumference of a round coin with a diameter of 20mm, you can use the formula:
Circumference = π × Diameter
Given that the diameter is 20mm and π = 3.14, substitute these values into the formula:
Circumference = 3.14 × 20mm
Circumference = 62.8mm
Therefore, the circumference of the round coin is 62.8mm.
A round coin has the 20mm find its circumference take π=3.14
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