Copyright © University of Cambridge. All rights reserved.

## 'Arclets' printed from http://nrich.maths.org/

Each of the following arclets is made from arcs of a circle of radius r.

**What is the perimeter of an arclet with 3, 4, 5, and n "nodes"?**

What happens when n is very large?

Explain the relationship between your answers and the perimeter of the original circle.