Answer:
<h2>

</h2>
Step-by-step explanation:
s = πrl + πr²
First move πr² to the left side of the equation
We have
πrl = s - πr²
Divide both sides by πr to make l stand alone
That's
<h3>

</h3>
We have the final answer as
<h3>

</h3>
Hope this helps you
It is actually the top one on the second picture because if you were to rotate it 180 degrees, it would end up on the same points
It depends on what level of classes you take, but algebra classes in college do tend to be harder than algebra classes in high school or middle school.