That question can't be answered.
There's no such thing as a number that's "closest" to 6 meters.
Whatever number you name ... no matter how close it is to 6 meters ... I can always
give you a different number that's even closer to 6 meters.
6 meters
6, 8 and 0
The closest English unit to the metric meter is the yard. 1 yard equals .9144 meters. In smaller units down further 1 foot equals .30408 meters.
18 yards18 yards
6 kilometers
6 kilometres.
The circumference of a circle with radius 6 meters is exactly 12 pi meters. If significant figures are important, the calculated length of 37,699111843077518861551720599354 meters must be rounded up to 40 meters
One length times one width will give you the square measurement of any area. Meters, feet, inches as long as you use the same measurement. 6 meters by 3 meters, equals 18 square meters. 6x3=18
Square meters is a measure of area and must be expressed in square feet, not simply feet. Six square meters is 64.6 square feet
A unit. You can't say a piece of wood is 6. It can be 6 millimeters, 6 centimeters, 6 meters or 6 inches or 6 ft. Without a unit a measurement is meaningless. A certain amount of accuracy is also useful.
none, meters are a measurement of distance, a cup is a measurement of volume
A liter is closest.