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MATH / Let S be the union of the set of all points inside a regular nonagon with side length 2 units and the set of all points less than 1 unit away from a point on the perimeter of the n…

Problem

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problem

Let SS be the union of the set of all points inside a regular nonagon with side length 22 units and the set of all points less than 11 unit away from a point on the perimeter of the nonagon. What, in units, is the perimeter of SS?
Plain-text mathematical notation (without MathML)
Let S be the union of the set of all points inside a regular nonagon with side length 2 units and the set of all points less than 1 unit away from a point on the perimeter of the nonagon.  What, in units, is the perimeter of S?
Original LaTeX notation
Let $S$ be the union of the set of all points inside a regular nonagon with side length $2$ units and the set of all points less than $1$ unit away from a point on the perimeter of the nonagon.  What, in units, is the perimeter of $S$?

level

Level 5

type

Geometry

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