Henry Ernest Dudeney/Modern Puzzles/90 - Equal Perimeters/Solution

by : $90$

 * Equal Perimeters

Solution
The smallest such common perimeter is $720$:


 * $180, 240, 300$
 * $120, 288, 312$
 * $144, 270, 306$
 * $72, 320, 328$
 * $45, 336, 339$
 * $80, 315, 325$