What are the names of the 2 most common roots? Not exponents, roots!

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Do you mind if you guys me with this question i’m on number 8

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