Ya I like the first one better than the second one but both are good
<u>Answer:</u>

<u>Solution:</u>
Given: x=30
To solve: 
On substituting the value of x,

On dividing 30 and 5 we get,

So, the option is 15.
-2y+2 combine like terms. this what your looking for?
Step-by-step explanation:
Get the square root of 316 which is 17.8
To get surface area you do cross section area x6
17.8×17.8×6=1896
To get volume you do length ×height ×width
17.8×17.8×17.8=5639.752cm³ or 5640cm³ if rounded off