The diameter of a semi circle is 140mm. find its circumference in cm
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Circumference = 2 * 3.14 * ( 140/2)
= 2 * 3.14 * 70
= 140 * 3.14
= 439.6
= 2 * 3.14 * 70
= 140 * 3.14
= 439.6
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