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Question Number 88487 by I want to learn more last updated on 11/Apr/20

Commented by I want to learn more last updated on 11/Apr/20

$$\mathrm{Please}\mathrm{help}.$$

Commented by jagoll last updated on 11/Apr/20

$${(3+\mathrm{r})}^2={(3-\mathrm{r})}^2+{(5-\mathrm{r})}^2$$$${(3+\mathrm{r})}^2-{(3-\mathrm{r})}^2={(5-\mathrm{r})}^2$$$$\left(6\right)\left(2\mathrm{r}\right)={\mathrm{r}}^2-10\mathrm{r}+25$$$${\mathrm{r}}^2-22\mathrm{r}+25=0$$$$\mathrm{r}=\frac{22-\sqrt{{22}^2-100}}{2}=\frac{22-19.6}{2}$$$$\mathrm{r}\approx 1.2\mathrm{cm}$$

Commented by $@ty@m123 last updated on 11/Apr/20

$$Nice....$$

Commented by I want to learn more last updated on 11/Apr/20

$$\mathrm{Oh}\mathrm{yes}.\mathrm{I}\mathrm{get}\mathrm{it}\mathrm{now}.\mathrm{I}\mathrm{apprectiate}.$$

Commented by I want to learn more last updated on 11/Apr/20

$$\mathrm{Wow}\mathrm{great}.$$$$\mathrm{Sorry}\mathrm{to}\mathrm{border}\mathrm{you}\mathrm{sir},\mathrm{am}\mathrm{weak}\mathrm{in}\mathrm{geometry},\mathrm{can}\mathrm{you}\mathrm{please}\mathrm{help}\mathrm{me}$$$$\mathrm{join}\mathrm{how}\mathrm{you}\mathrm{derive}\mathrm{the}\mathrm{equation}?.$$

Commented by $@ty@m123 last updated on 11/Apr/20

Commented by $@ty@m123 last updated on 11/Apr/20

$$ApplyPythagorastheoreminright$$$$angledtriangleABC.$$

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