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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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Advent calendar 2024
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List of all puzzles
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colouring
christmas
multiples
3d shapes
symmetry
integers
chess
tournaments
floors
polynomials
addition
digital clocks
decahedra
surds
neighbours
speed
taxicab geometry
geometry
numbers grids
dates
number
albgebra
square numbers
coordinates
shape
averages
square grids
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prime numbers
ellipses
means
division
median
sums
pascal's triangle
indices
geometric means
lines
rugby
elections
wordplay
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probability
volume
squares
combinatorics
mean
triangles
shapes
spheres
arrows
axes
doubling
tiling
routes
calculus
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consecutive numbers
sequences
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clocks
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percentages
expansions
rectangles
dice
dodecagons
products
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numbers
time
folding tube maps
cryptic crossnumbers
palindromes
crosswords
consecutive integers
coins
quadratics
grids
range
digits
odd numbers
powers
chalkdust crossnumber
algebra
ave
trigonometry
2d shapes
factors
digital products
tangents
books
fractions
geometric mean
pentagons
logic
sets
cubics
sum to infinity
square roots
quadrilaterals
star numbers
medians
sport
dominos
area
factorials
money
people maths
crossnumbers
hexagons
circles
advent
even numbers
unit fractions
binary
irreducible numbers
games
multiplication
proportion
planes
graphs
differentiation
triangle numbers
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menace
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gerrymandering
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