## Algebra 1: Common Core (15th Edition)

$4$ $to$ $1$
Area of a circle = $\pi r^{2}$ $A_{1}=\pi r_{1}^{2}=\pi (6x)^{2}=\pi * 36x^{2}$ $A_{2}=\pi r_{2}^{2}=\pi (3x)^{2}=\pi * 9x^{2}$ Ratio : $\frac{A_{1}}{A_{2}}= \frac{36x^{2}}{9x^{2}}=\frac{4}{1}$