15,000 cm3
A lock on a door knob.
The answer has to be a broom or mop.
Oh, dude, a common household object that's 0.5 meters long? That's like asking me to find a needle in a haystack... but hey, I got this! A standard ruler is about 0.5 meters long. So next time you need to measure something, just whip out that bad boy and go to town.
It is 90,000 mm
30cm is about 12 inches or 1 foot in length
A standard ruler is typically 30cm long, so an object that is 19.5cm long could be a smaller ruler, a pencil, or a regular sized envelope.
..... If you have a household runway maybe
30CM 30CM
30cm is about 11 3/4 inches.
the gullet is 30cm long!
30cm
The gut is 30cm
15,000 cm3
Look at a ruler, if you don't know....
About 10-30cm :)
30cm