A cube has each of its faces covered by one face of an identical cube making a solid as shown. The volume of the solid is 875 cm³. What in cm² is the surface area of the solid

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected