Ok so this is a Pythag question...
So the first step would be A squared plus B squared equals C squared
Your A squared would be 12
You do not have B squared value yet
Your C squared Would be 16
So your equation is 12 squared plus B squared equals 16 squared
Simplified that would be 144 plus B squared equals 256
Subtract 144 from both sides and you get 112 equals B squared so do that dividing symbol thing on both sides and you get 10.58 equals c
C= 10.58
After distributing you get this equation. 2r+4 =2r+4 since it's the same expression on both sides the answer would be r=All real numbers because no matter whatever real number u put for r it will come out the same on both sides
Answer:
or 
Step-by-step explanation:
Use the volume, I'm guessing, formula, 
Convert
to an improper fraction using the rule:


Multiply

Simplify

Simplify

Done.
Answer:
n-185
Step-by-step explanation:
since 185 needs to be subtracted from a number, or n
Answer:
You just do 3/4 × 3/4 × 3/4 to find the volume. the answer would be 27/64 in fraction form. in decimal form it would be 0.421875