How do you calculate a Kubernetes cluster's consistent resource capacity?

Microservice amount * Instance type (e.g. 2C/4G)

Microservice amount * Average instance amount * Instance type (e.g. 2C/4G)

Microservice amount * Average instance amount * Instance type (e.g. 2C/4G) *

Redundancy

Microservice amount * Average instance amount * Instance type (e.g. 2C/4G) *

Redundancy + Autoscale nodes instance type

This is the blank file which was shared for last exam