silverdiv......you are talking to the crock pot expert. You really want to cook your roast on low but if you have to cook it on high depending on the size of the roast it usually should take 3-4 hours.
The symbol for cubic meters is m 3. Less formally, cubic meter is sometimes abbreviated cu m. When calculating volume, it is important to realize that volume is proportional to the cube of the linear dimension.
You can view more details on each measurement unit: meters cubed or liter. The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 1000 liter.