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