Height3 tenths m
3.5 hundredthsLimousine lengths
5 tenthsTumbleweed diameters
5 tenthsDachshunds
Photo from Wikimedia Commons
A4 Paper (Single Sheet)
The 210 x 297 mm rectangle that runs the world/Everyday Objects
A single sheet of A4 paper measures exactly 210 mm by 297 mm, a ratio of 1 to the square root of 2. This elegant ratio means that when you fold or cut an A4 sheet in half, you get two A5 sheets with the same proportions. The standard was first adopted in Germany in 1922 and is now used by every country except the US and Canada. A sheet of 80 gsm A4 weighs exactly 4.989 grams.
Measurements
Width2.1 tenths m
4.77Oreo diameters
3.5 tenthsTumbleweed diameters
Thickness100 millionths m
1.8 thousandthsRubik's cubes
3.3 thousandthsAirPod lengths
10.6 sextillionthsLight-years
0.1 mm for 80 gsm
Weight5 thousandths kg
2.5 thousandthsChihuahuas
1.4 thousandthsNewborn babies
4.989 g at 80 gsm
Surface area6.2 hundredths m^2
62.4 millionHuman cell surfaces
5.9 thousandthsTrampoline surfaces
143 millionthsBasketball court areas