Question

Solve SA = πrs + π r2 for s

Answer 1

SA = πrs + π r^2

subtract π r^2 from each side

SA -π r^2 =πrs

divide each side by πr

(SA -π r^2)/πr = s

Answer 2

Answer:

$s=\frac{SA-\pi r^{2} }{\pi r }$

Step-by-step explanation:

To solve this expression for S we are going to proceed the following way:

$SA=\pi rs+\pi r^{2} \\SA-\pi r^{2} =\pi rs\\\frac{SA-\pi r^{2} }{\pi r } =s$

Notice that first we had to took all the terms of the expression that didn't have s and we moved them to the right (with the opposite sign).

Once we had the term with s (πrs) on the left, we proceed to divide by πr to leave the s alone.