Question

s=2πrh solve for the variable r

Answer 1

What does it mean to solve for a variable?
It means to perform operations on the equation
in order to isolate the variable asked for
on the left side of the = sign
and all else on the right side of the = sign

1) S=2πrh, for variable r

Since all the terms are multiplied
we divide both sides by those variables
which will be moved to the other side
in order to get r by itself

diveid by 2πh

S/2πh = r
And that's all there's to it
And to make it more elegant just flip the eqaution to

r = S/2πh

2) V= πr^2h, for variable h

Same procedure in this one

Divide both sides byπr^2

V/πr^2 = h

h = V/πr^2

Answer 2

Hi, Um you are in history! you should be in math. But any way the answer is up top.