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The radius of a circle is 18 ft. Find its circumference in terms of

π.

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Answer:

Circumference = 36π

Explanation:

The formula for circumference is C = πd, where

  • C is the circumference,
  • and d is the diameter

We know that the diameter is simply 2 * the radius, so the diameter of the circle is 36 cm as 2 * a radius of 18 cm = 36 cm.

To find the circumference in terms of π, we simply multiply 36 and π, but don't simplify, approximate, etc.

Thus, the circumference in terms of π is C = 36π

User Questborn
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