Joe鈥檚 triangle
Joe drew a right-angled triangle on an A6 file card. He asked Penny to cut it out and then cut it in two to make two right-angled triangles. Then he asked her to cut each triangle in two to make four right-angled triangles in total. Now Joe鈥檚 triangle was very special. Penny found that the lengths of all the sides of all the triangles were a whole number of millimetres.
What was the area of the smallest triangle?
WIN 拢15 will be awarded to the sender of the first correct answer opened on Wednesday 1 August. The Editor鈥檚 decision is final. Please send entries to Enigma 1704, 快猫短视频, Lacon House, 84 Theobald鈥檚 Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).
Advertisement
Answer to 1698 The pied piper: Six of the numbers were correct and the original number displayed was 3.1429571
The winner David Peterson of Port Royal, South Carolina, US