Question

S=πrl+πr2 solve for l.

Answer 1

`l = \frac{s - π {r}^(2) }{πr}`

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

`(\pi \:rl)/(\pi \: r) = \frac{s - \pi \: {r}^(2) }{\pi \: r}`

We have the final answer as

`l = \frac{s - π {r}^(2) }{πr}`

Hope this helps you