Besar sudut POQ = 25° dan besar sudut ROS = 120°. jika luas juring OPQ = 15 cm², maka luas juring OSR adalah....
MicoArrafi
![$\begin{align} \frac{L_{j\odot[OPQ]}}{L_{j\odot[OSR]}}&=\frac{\angle POQ}{\angle ROS}\\\frac{15\ cm^2}{L_{j\odot[OSR]}}&=\frac{25^{\circ}}{120^{\circ}}\\L_{j\odot[OSR]}&=\frac{15\ cm^2\times120^{\circ}}{25^{\circ}}\\L_{j\odot[OSR]}&=\boxed{72\ cm^2} \end](https://tex.z-dn.net/?f=%24%5Cbegin%7Balign%7D+%5Cfrac%7BL_%7Bj%5Codot%5BOPQ%5D%7D%7D%7BL_%7Bj%5Codot%5BOSR%5D%7D%7D%26%3D%5Cfrac%7B%5Cangle+POQ%7D%7B%5Cangle+ROS%7D%5C%5C%5Cfrac%7B15%5C+cm%5E2%7D%7BL_%7Bj%5Codot%5BOSR%5D%7D%7D%26%3D%5Cfrac%7B25%5E%7B%5Ccirc%7D%7D%7B120%5E%7B%5Ccirc%7D%7D%5C%5CL_%7Bj%5Codot%5BOSR%5D%7D%26%3D%5Cfrac%7B15%5C+cm%5E2%5Ctimes120%5E%7B%5Ccirc%7D%7D%7B25%5E%7B%5Ccirc%7D%7D%5C%5CL_%7Bj%5Codot%5BOSR%5D%7D%26%3D%5Cboxed%7B72%5C+cm%5E2%7D+%5Cend "$\begin{align} \frac{L_{j\odot[OPQ]}}{L_{j\odot[OSR]}}&=\frac{\angle POQ}{\angle ROS}\\\frac{15\ cm^2}{L_{j\odot[OSR]}}&=\frac{25^{\circ}}{120^{\circ}}\\L_{j\odot[OSR]}&=\frac{15\ cm^2\times120^{\circ}}{25^{\circ}}\\L_{j\odot[OSR]}&=\boxed{72\ cm^2} \end")
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