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Circumference of a Circle and Introduction with the Number π

The radius of...

Question

The radius of a circle is $5$ units. The circumference of this circle is units.

A

10 π

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B

15 π

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C

20 π

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Solution

The correct option is A $10 π$

Circumference of a circle $= 2 π r$

$= 2 π \times 5$

$= 10 π$ units

Therefore, the circumference of the circle is $10 π$ units.

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