Pada suatu lingkaran dengan pusat O dikettahui titik A B C dan D pd keliling lingkaran sehingga sudut AOB = 35 derajat dan ssudut COD= 140 derajat garis lengkung AB = 14 cm, hitunglah panjang garis lengkung CD......... ?????
MicoArrafi
![$\begin{align} \frac{P_{b[AB]}}{P_{b[CD]}}&=\frac{\angle AOB}{\angle COD}\\\frac{14\ cm}{P_{b[CD]}}&=\frac{35^{\circ}}{140^{\circ}}\\P_{b[CD]}&=\frac{140^{\circ}\times14\ cm}{35^{\circ}}\\P_{b[CD]}&=\boxed{56\ cm} \end{align}](https://tex.z-dn.net/?f=%24%5Cbegin%7Balign%7D+%5Cfrac%7BP_%7Bb%5BAB%5D%7D%7D%7BP_%7Bb%5BCD%5D%7D%7D%26%3D%5Cfrac%7B%5Cangle+AOB%7D%7B%5Cangle+COD%7D%5C%5C%5Cfrac%7B14%5C+cm%7D%7BP_%7Bb%5BCD%5D%7D%7D%26%3D%5Cfrac%7B35%5E%7B%5Ccirc%7D%7D%7B140%5E%7B%5Ccirc%7D%7D%5C%5CP_%7Bb%5BCD%5D%7D%26%3D%5Cfrac%7B140%5E%7B%5Ccirc%7D%5Ctimes14%5C+cm%7D%7B35%5E%7B%5Ccirc%7D%7D%5C%5CP_%7Bb%5BCD%5D%7D%26%3D%5Cboxed%7B56%5C+cm%7D+%5Cend%7Balign%7D "$\begin{align} \frac{P_{b[AB]}}{P_{b[CD]}}&=\frac{\angle AOB}{\angle COD}\\\frac{14\ cm}{P_{b[CD]}}&=\frac{35^{\circ}}{140^{\circ}}\\P_{b[CD]}&=\frac{140^{\circ}\times14\ cm}{35^{\circ}}\\P_{b[CD]}&=\boxed{56\ cm} \end{align}")
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RezaPandai1
Pb maksudnya apa ya???