What is 210x297mm in cubic meters?

Answer 1

An area can be said to have zero, or infinite depth, so the area of 210mm x 297 mm (the [approx] size of A4) has a volume of zero, or infinite, cubicmeters.

Methinks you meant in square meters.

Mathematically, this can be worked out:

1000 mm = 1 m

⇒ 210 mm x 297 mm = 210 ÷ 1000 m x 297 ÷ 1000 m

= 0.06237 sq m

Alternatively, assuming the figures are for a sheet of A4 paper (they are actually approximate), then

A4 is half the area of A3,

A3 is half the area of A2,

A2 is half the area of A1,

A1 is half the area of A0.

⇒ A4 is one sixteenth the area of A0.

A0 has an area of 1 sq m

⇒ A4 has an area of 1/16 m = 0.0625 sq m

The exact dimensions of A4 are: 1/8 √(2√2) mm by 1/4 √√2 mm

which are approx (closer to) 210.2 mm by 297.3 mm