Given:


To find:
The
.
Solution:
Conditional probability:

Substituting the given values, we get



Therefore, the correct option is B.
What square? Seems like you forgot to add a picture
Answer: The second option.
Step-by-step explanation:
1. Calculate the first volume assuming that the figure is completed (with no missing part). Therefore, you must apply the formula for calculate the volume of a square prism:

Where s is the side of the base and h is the height.
2. Then:

4. The volume of the missing part is calculated with the formula of a rectangular prism:

Where l is the lenght, w is the width and h is the height. Then:

5. Therefore, you must subtract both volumes to obtained the volume of the figure:

It is the commutative property of addition