Question

I dont understand someone help me please help help help!!! pleasee​

Answer 1

`r=\sqrt{R^2-(V)/(\pi h)}`

Explanation:

You are being asked to solve the volume equation for r. We find that r is squared, added to something, the sum is multiplied by something. We want to undo those operations, in reverse order.

`V=\pi h(R^2-r^2)\\\\(V)/(\pi h)=R^2-r^2\qquad\text{divide by $\pi h$}\\\\r^2=R^2-(V)/(\pi h)\qquad\text{add $r^2-V/(\pi h)$}\\\\\boxed{r=\sqrt{R^2-(V)/(\pi h)}}\qquad\text{square root}`