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Re: In the figure above, if what is the value of r ?
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06 Jun 2016, 18:03
Explanation
From the figure, note that r° + s° must equal 180°. Therefore \(\frac{r}{(r+s)}=\frac{r}{180}\). Since you are also given in the question that \(\frac{r}{(r+s)}=\frac{5}{8}\), you can conclude that \(\frac{r}{180}=\frac{5}{8}\). Thus \(r = \frac{5*180}{8} = 112.5\), and the correct answer is 112.5.