EMERGENCY! PLEASE HELP! Write the ratio using ":".

*If the scale factor is a:b, then the ratio of areas is a^2:b^2, and the ratio of volumes is a^3:b^3.

Prism C : Prism D
scale factor:
ratio of areas: 16:49
ratio of volumes:

Cylinder X : Cylinder Y
scale factor: 3:5
ratio of areas:
ratio of volumes:

Cone M : Cone N. scale factor:
ratio of areas:
ratio of volumes: 1:8