Phil L wrote:

Grumps wrote:

Phil L wrote:
snip

A cubic foot is 0.028316849999999997 of a cubic metre.

According to Google, 1 cubic foot = 0.0283168466 cubic meters.
Which is correct?


0.028316849999999997

I make it 0.028,316,846,592 /exactly/.

Start with 1 in. = 0.0254 m exactly, by definition.

Multiply by 12, so 1 ft. = 0.3048 m exactly.

Multiply the cube out longhand (ages since I've done that).

3048 * 3048 * 3048 = 28,316,846,592

Therefore 1 ft^3 = 0.028,316,846,592 m^2.

QED.

--
Andy