The GCF is 5m2
5 is a prime number common to both terms.
The GCF is 15m3
The mass of an object can be calculated by multiplying its volume and density. The formula is: Mass = Volume x Density. Make sure the volume is in cubic units (such as cubic centimeters or cubic meters) and the density is in units such as grams per cubic centimeter or kilograms per cubic meter.