Find the mass of the solid E,if E is the cube given by 
and the density function 
is 
Definitions:
Open Primaries
A primary election system where voters are not required to declare a party affiliation and can choose to vote in any party's primary.
Closed Primaries
Electoral contests limited to registered party members, preventing members of other parties from participating in the selection of that party's candidates.
Presidential Delegates
Selections made by a political party or candidate to represent them at their party's national convention, instrumental in choosing the party's presidential nominee.
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