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Advent calendar 2018
2 December
All 2018 advent puzzles
~
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Today's number is the area of the largest dodecagon that it's possible to fit inside a circle with area \(\displaystyle\frac{172\pi}3\).
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The largest dodecagon will be regular. It's area will be
172
.
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Most recent collections
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List of all puzzles
Tags
remainders
3d shapes
cards
christmas
chess
neighbours
regular shapes
cryptic crossnumbers
fractions
albgebra
triangle numbers
hexagons
scales
elections
wordplay
square roots
2d shapes
range
arrows
dates
planes
sum to infinity
angles
advent
rugby
area
unit fractions
numbers grids
trigonometry
calculus
factors
shape
tangents
division
dominos
square numbers
numbers
polygons
quadratics
indices
decahedra
menace
digital products
surds
number
grids
speed
routes
functions
ave
lines
cube numbers
combinatorics
pascal's triangle
folding tube maps
probability
money
gerrymandering
time
doubling
clocks
people maths
geometry
averages
volume
proportion
multiplication
triangles
balancing
dodecagons
products
cryptic clues
taxicab geometry
medians
factorials
digital clocks
consecutive integers
sums
binary
mean
circles
probabilty
colouring
powers
odd numbers
ellipses
symmetry
algebra
coordinates
sets
geometric mean
polynomials
quadrilaterals
matrices
digits
logic
palindromes
axes
median
star numbers
parabolas
chalkdust crossnumber
partitions
spheres
books
bases
graphs
shapes
percentages
cubics
integration
pentagons
games
floors
crossnumbers
crosswords
tiling
expansions
rectangles
addition
tournaments
irreducible numbers
even numbers
sequences
sport
perimeter
determinants
geometric means
square grids
differentiation
squares
complex numbers
prime numbers
coins
chocolate
multiples
consecutive numbers
dice
means
perfect numbers
integers
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