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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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circles
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,
area
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Most recent collections
Advent calendar 2024
Advent calendar 2023
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List of all puzzles
Tags
hexagons
perimeter
axes
geometry
range
crosswords
quadratics
planes
scales
grids
rugby
folding tube maps
digital clocks
menace
perfect numbers
coordinates
people maths
surds
shape
doubling
sets
geometric mean
triangle numbers
triangles
square numbers
multiplication
symmetry
decahedra
spheres
quadrilaterals
sport
expansions
dates
cryptic crossnumbers
shapes
addition
factorials
indices
algebra
parabolas
square grids
volume
pentagons
prime numbers
chess
unit fractions
products
arrows
digital products
trigonometry
cubics
mean
gerrymandering
angles
dice
partitions
elections
integration
medians
probabilty
fractions
cryptic clues
factors
bases
time
area
geometric means
consecutive numbers
ellipses
regular shapes
remainders
graphs
matrices
coins
chalkdust crossnumber
calculus
games
division
balancing
functions
digits
rectangles
multiples
floors
the only crossnumber
albgebra
pascal's triangle
christmas
logic
colouring
odd numbers
advent
cards
number
percentages
complex numbers
lines
sums
taxicab geometry
probability
star numbers
wordplay
dominos
differentiation
integers
determinants
median
speed
money
even numbers
numbers
tangents
polynomials
circles
consecutive integers
3d shapes
palindromes
sum to infinity
polygons
averages
cube numbers
routes
tournaments
binary
dodecagons
proportion
tiling
combinatorics
ave
numbers grids
irreducible numbers
crossnumbers
books
means
chocolate
neighbours
square roots
clocks
squares
sequences
powers
2d shapes
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