Answer: D) 
Step-by-step explanation:
The volume of a rectangular prism is given by :_

Given: Length of the rectangular prism = 
Width = 
Height = 
Then, the volume of a rectangular prism will be :-

C/4=168
C=168*4 (both sides by 4)
C=672
Answer:
42.9
Step-by-step explanation:
There are many ways to answer this one, the most direct way would be to state that tan(65)=a/20
20tan(65)=a
Using the calculator (set in degree mode)
we find that a ~ 42.9
Use order of operations
P
E
M
D
A
S
So multiply 5x6 to get 30
Then times 6x3 to get 18
Next times 4x9 to get 36
Add 30, 18, and 36 together to get
84