Question

S = 2 rh
i don’t understand it

Answer 1

You just need to divide both sides by
`2\pi h`: the equation becomes

`s = 2\pi rh \iff (s)/(2\pi h)=(2\pi rh)/(2 \pi h) \iff (s)/(2\pi h)=r`

Answer 2

Explanation:

s = 2pirh

s ÷ 2 = pirh

s ÷ 2pi = rh

s ÷ 2pih = r