Post a New Question

Math (geometry)

posted by .

How do I find the radius of a regular nonagon with an apothem of length 6.42in.

  • Math (geometry) -

    There are 9 40° angles in a circle, so the nonagon consists of 9 isosceles triangles, having angles of 40,70,70.

    The radius is r, where
    6.42/r = cos20°

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question