Alternatively, you can space the seeds 6 to 10 inches (15.24 to 25.4 cm) apart and thin your seedlings out once they reach 4 inches (10 cm) tall. At that point, you should consider thinning them out so that they are 18 inches (45.72 cm) apart.
Volume - Arcy Art Original Oil Paintings Art Dictionary. Volume is the size, bulk and dimension of a particluar object. It is an object that is usually thick, nontransparent and exists solidly and three-dimensionally in space and it is not flat. In a painting a volume is represented with light and shade and usually in spatial situation to make the nonflatness clear.
The mass is expressed in grams (g). Mass is an extensive property of a substance. Extensive properties depend on the quantity of the substance. Volume, usually measured in units of milliliters (mL), liters (L), or cubic centimeters (cm 3) is also an extensive property. Volume is a measure of the amount of space a substance occupies. If the substance is in a liquid or gaseous state, its occupied space or volume is measured in liters (L) or milliliters (mL). When a substance is a liquid, its volume can be measured directly in a graduated cylinder, which is a piece of calibrated glassware.