The answer is 13 because a quarter is 25 cents so subtract 90 by 25 to get 65. Then you would divide 65 by 5 cents for the nickels and get 13.
Volume of a cone =

The radius is 5ft, and the height is 16ft, therefore the answer is 418.88, which is option D***
Answer:

Step-by-step explanation:
Since our foci are located on the x-axis, then our major axis is going to be the horizontal transverse axis of the hyperbola:
<u>Formula for hyperbola with horizontal transverse axis centered at origin</u>
- <u />

- Directrices ->

- Foci ->
where 

Since we are given our directrices of
and foci of
, then we can set up the directrices equation to solve for
:

Now we can determine
to complete our equation for the hyperbola:

Therefore, our equation for our hyperbola is 
The the scale factor is 9
You can do this by dividing the values of the sculpture by the model
For example:
L: 72/8 = 9
W: 54/6 = 9
H: 81/9 = 9