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Just number 16#. Please reply asap.

Just number 16#. Please reply asap.-example-1

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r = C / (2 * pi)
r = 125.6 / (2 * 3.14)
r = 125.6 / 6.28
r = 20 <== the radius

diameter of a circle is twice the radius......2 * 20 = 40 <== diameter
User Zergatul
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