Answer:
cubic blocks
Step-by-step explanation:
The given parameters are:



Required
Number of cubic blocks to fill the tank
To do this, we simply calculate the volume of the tank by:

This gives:


Simplify

Express as mixed numbers

-3 is the remainder when you synthetically divide
Since the figures are similar, we can establish a rule of three as follows.
We know that the area of the smaller figure is

, and its volume is

. We also know that the area of the larger figure is

; since we don't now its volume, lets represent it with

:



We can conclude that the volume of the larger figure is

; therefore, the correct answer is
a.