Answer:
The given expression
on multiplying is 
Step-by-step explanation:
Consider the given two expressions
and 
We have multiply both expressions,

To multiply two terms first multiply constant numbers that is 6 × 2 = 12
For x , y and z apply property of exponent,

Then power of x together will be,

Similarly for y powers,

Since first term do not have any expression for z so it will remain same.
Thus, the given expression on multiplying become,
is 
Answer:
316.41
Step-by-step explanation:
Because if you mutiply to find both volumes then add the volumes together you would get 316.41
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Associative property of mulipication, the ability to move parenthasees with mltipication or additon