Solve for R
R=\frac{\pi hr+22}{\pi h}
h\neq 0
Solve for h
h=\frac{22}{\pi \left(R-r\right)}
R\neq r
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2\pi Rh=44+2\pi rh
Add 2\pi rh to both sides.
2\pi hR=2\pi hr+44
The equation is in standard form.
\frac{2\pi hR}{2\pi h}=\frac{2\pi hr+44}{2\pi h}
Divide both sides by 2\pi h.
R=\frac{2\pi hr+44}{2\pi h}
Dividing by 2\pi h undoes the multiplication by 2\pi h.
R=r+\frac{22}{\pi h}
Divide 44+2\pi rh by 2\pi h.
2\pi Rh-2\pi rh=44
Multiply -1 and 2 to get -2.
\left(2\pi R-2\pi r\right)h=44
Combine all terms containing h.
\frac{\left(2\pi R-2\pi r\right)h}{2\pi R-2\pi r}=\frac{44}{2\pi R-2\pi r}
Divide both sides by 2\pi R-2\pi r.
h=\frac{44}{2\pi R-2\pi r}
Dividing by 2\pi R-2\pi r undoes the multiplication by 2\pi R-2\pi r.
h=\frac{22}{\pi \left(R-r\right)}
Divide 44 by 2\pi R-2\pi r.
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