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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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averages
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multiplaction squares
hexagons
taxicab geometry
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integration
numbers
polygons
proportion
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decahedra
calculus
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ellipses
perimeter
multiplication
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lines
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median
tiling
menace
square numbers
scales
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algebra
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sum to infinity
fractions
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chalkdust crossnumber
square grids
digital clocks
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quadratics
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sets
trigonometry
number
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products
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circles
symmetry
christmas
star numbers
money
geometric mean
sequences
books
pentagons
grids
tournaments
people maths
determinants
ave
powers
wordplay
neighbours
polynomials
irreducible numbers
perfect numbers
pascal's triangle
lists
addition
rugby
binary
remainders
prime factors
unit fractions
cryptic crossnumbers
routes
prime numbers
rectangles
time
shapes
colouring
square roots
planes
doubling
spheres
elections
bases
geometry
indices
sport
complex numbers
mean
speed
quadrilaterals
xor
cards
geometric means
angles
digits
matrices
regular shapes
advent
folding tube maps
balancing
medians
logic
area
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