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Question Number 185522 by Mingma last updated on 23/Jan/23

Commented by Frix last updated on 23/Jan/23

$$\mathrm{This}\mathrm{only}\mathrm{requires}$$$$r=\frac{D}{2(a+b+c)}$$$$R=\frac{abc}{D}$$$$D=\sqrt{(a+b+c)(b+c-a)(a+c-b)(a+b-c)}$$

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