Answer:The solution is in the attached file below
Step-by-step explanation:
First, you need to find the length of the smaller cubes side. To do this you would need to find the square root of 0.25. then you find the volume with the new found side length of the smaller cube by cubing the new side length and once you have your volume of smaller cube right it down.
Now you need to find the big cube volume by cubing its side length. Once you have found both of these volumes you subtract the smaller cube's volume from the bigger cube's volume to get the difference in size. Hope this helps
Answer: C) 
Step-by-step explanation:
First we need to calculate the area of the square base.
This is 7*7 which equals 49 cm squared.
Plug this value into the formula of a square pyramid which will be 
, now plug in the h, which is 9 cm.
Now solve.
V = 147 cubic cm.
The domain of the function is the union of all of the "if" parts of the function definition:
... (-∞, -1) ∪ [-1, 1] ∪ (1, ∞) = (-∞, ∞)
There are 4! ways to sit the boys, and 4! ways to sit the girls.
Whether the boys sit to the left or the right of the girls don't matter, since it is a circular table AND rotations are not considered distinct arrangements.
So the total number of arrangements is the product of the two, namely n=4!4!. (note: (4!)^2 or (four factorial) squared.
