2 December

Today's number is the area of the largest dodecagon that it's possible to fit inside a circle with area \(\displaystyle\frac{172\pi}3\).

Show answer


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


means advent people maths floors mean dates calculus crossnumber probability triangle numbers fractions gerrymandering chess number factors sum to infinity dice percentages area triangles multiples rectangles ave partitions clocks 3d shapes coins money graphs geometry hexagons odd numbers median regular shapes star numbers ellipses time complex numbers books remainders chalkdust crossnumber dodecagons digits digital clocks shape perimeter colouring chocolate rugby scales elections games folding tube maps angles addition circles perfect numbers products prime numbers grids lines coordinates differentiation tiling multiplication wordplay squares spheres algebra palindromes unit fractions sport bases irreducible numbers factorials christmas menace integers parabolas logic taxicab geometry sums crossnumbers routes division crosswords planes sequences cryptic crossnumbers integration square roots indices dominos square numbers numbers doubling polygons cards arrows quadratics surds cryptic clues cube numbers probabilty the only crossnumber pascal's triangle proportion functions range symmetry shapes trigonometry balancing averages 2d shapes speed volume


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020