Ratio of length, area and volume of similar shapes

Question 1

To workout the volume:

Answer 1

Cube the scale factor (eg.3’3/3cubed)
3cubed is 27
27 x volume of this shape
That gives the volume of the large shape

Question 2

To get area:

Answer 2

Square the linear scale factor (eg. 3’2/3squared)
3 squared is 9
Times 9 by the area of the other shape to get the area of the large shape