Answer:
for 7 its b and for 8 its C becuase i took this test and got it right
Step-by-step explanation:
You can express the edge lengths in terms of "cubes" or you divide the total volume by the volume of a cube. It works either way.
Edge lengths are
.. 80 cubes by 8 cutes by 13 cubes
so total volume is
.. (80 * 8 * 13) = 8320 cubes
In cubic inches, the volume is
.. (20 in)*(2 in)*(3 1/4 in) = 130 in^3.
The volume of a 1/4-in cube is (1/4 in)^3 = 1/64 in^3.
Then the number of cubes that will fit in the prism is
.. (130 in^3)/(1/64 in^3) = 8320 . . . . cubes
8320 cubes are needed to fill the rectangular prism.
Hope this helps again! :)
Answer:
Evaluate.
Step-by-step explanation:
If you attempt to do the equation 
, you will get a very long and complicated answer (which is 2.2233078e+21), so I am assuming that is not the question.
If you were to do 
, you would get a more rational answer of 62.566.
If you would comment on this post or be more specific on what exactly the question aims to ask, that would be a huge help. :)
