PLS PLS HELP FIND THE VOLUME!!! PLS PLS I GIVE U ALL MY POINTS
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Answer:
12.686cm
Step-by-step explanation:
By using pythagoras, we can find CB.
We know that
Therefore,
(it has to be positive since it is distance)
now we look at triangle BCD and use SOH CAH TOA.
We need to start from the innermost parenthesis and work our way out.
The first parenthesis is . These are not like terms because one involves a variable, while the other is a constant term. Two terms are summable if they involve the same power(s) of the same variable(s).
So, we can take one step outwards, and we arrive to the square brackets. We have
and 2z and -13z are like terms, so we can sum them:
Finally we arrive to the whole expression, which is
Because, again, 5z and 11z were like terms.