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The radius of a regular pentagon is 11 m. What is the length of its apothem?

Question

The radius of a regular pentagon is 11 m. What is the length of its apothem?

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Solution

To find the length of the apothem of a regular pentagon with a given radius, we can use the formula for the apothem (a) of a regular polygon:

a = r * cos(π/n)

where:

  • r is the radius of the polygon, and
  • n is the number of sides of the polygon.

For a regular pentagon, n = 5.

So, the apothem a = 11m * cos(π/5).

Now, calculate the value of cos(π/5) and multiply it by 11m to get the length of the apothem.

This problem has been solved

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