What value is a permutation of n things taken r at a time divided by to get the combination of n things taken r at a time?

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

What is the slope of (0,32) and (100,212)

Does the construction demonstrate how to copy an angle correctly using technology a) yes the distance between points a and f was used to create circle h b) yes the distance between points f and g was used to create circle h c) no the distance between points a and f was used to create circle h d) no the distance between points f and g was used to create circle h