# Constructing the Radius of a Ball

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

Using a ball, a sheet of paper, a compass, a straightedge without markings, and a pencil, can you draw a line segment on the paper equal to the ball's radius?

[more]
Contributed by: Izidor Hafner (June 2014)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Reference

[1] B. A. Kordemsky, *The Moscow Puzzles*, London: Penguin, 1990 pp. 251–252.

## Permanent Citation