4(c+12)=2c+18 what is c=?
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The total volume is the sum of volume of cone and volume of cylinder.
Volume of cylinder = πr²h
π = 3.14
r = 4/2 = 2 mm
h = 2 mm
So, volume of cylinder equals:
mm³
Volume of cone =
π = 3.14
r = 2 mm
h = 3 mm
So, volume of cylinder equals:
mm³
Thus, total volume of the figure = 25.12 + 18.84 = 43.96 mm³
Volume of cylinder = πr²h
π = 3.14
r = 4/2 = 2 mm
h = 2 mm
So, volume of cylinder equals:
Volume of cone =
π = 3.14
r = 2 mm
h = 3 mm
So, volume of cylinder equals:
Thus, total volume of the figure = 25.12 + 18.84 = 43.96 mm³
Let's say you want to compute the probability 
where 
converges in distribution to 
, and follows a normal distribution. The normal approximation (without the continuity correction) basically involves choosing such that its mean and variance are the same as those for .
Example: If is binomially distributed with 
and 
, then has mean 
and variance 
. So you can approximate a probability in terms of with a probability in terms of :
where
follows the standard normal distribution.
Example: If
where