Use trigonometry to solve for x.
The tangent function is defined to be opposite side divided by the adjacent side.
tan(78) = x/10
tan(78)(10) = x
47.0463010948 = x
We now round off to two decimal places. In other words, we round off to the nearest tenths.
47.05 = x
Done!
The answer would be A since in that case its a percentage and there can be multiple answers. In the other questions, there is a definitive answer for it.
Hope this helps :)
AS we know that:

And we have the volume and we can calculate the SA,,,
So that, we can conclude:

Are you
satisfied?
Step-by-step explanation:
<h2>Answer:-</h2>

First, we need to add up the x.
We know that 4+8 = 12, so

Now, equating it to y,

Now, if I multiply
on both sides,
I get,
Now, as 12 got cancelled , I got the final answer as
Hope it helps :)