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 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019