24 September 2026
Sheet #24
The five rounds of 24 September 2026, with the real sizes and what each measurement covers.
- 01
Measured Height of an A4 sheet (ISO 216)
Fold an A4 in half and you get A5: the side ratio stays √2.
- 02
ReferenceTraffic light3 m
To size upTelevision1.22 m
Measured Width of a 55-inch 16:9 television
Its diagonal is 1.40 m, but its width only 1.22 m.
- 03
ReferenceMotorcycle2.1 m
To size upStegosaurus7 m
Measured Length of an adult Stegosaurus
Its back plates likely served for display and heat regulation.
- 04
ReferenceStatue of Liberty93 m
To size upStreet lamppost8 m
Measured Height of a street light
On a road, lampposts are spaced about three times their height apart.
- 05
ReferenceEmpire State Building381 m
To size upSaturn V rocket111 m
Measured Height of the Saturn V rocket
At lift-off it burned about 13 tonnes of propellant every second.