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