Question Number 131534 by mr W last updated on 06/Feb/21
![](https://www.tinkutara.com/question/18525.png)
Commented by mr W last updated on 05/Feb/21
![find the radii of the inscribing and the circumscribing sphere of a tetrahedron with edge lengthes a,b,c, p,q,r as shown.](https://www.tinkutara.com/question/Q131535.png)
$${find}\:{the}\:{radii}\:{of}\:{the}\:{inscribing}\:{and} \\ $$$${the}\:{circumscribing}\:{sphere}\:{of}\:{a} \\ $$$${tetrahedron}\:{with}\:{edge}\:{lengthes}\:{a},{b},{c}, \\ $$$${p},{q},{r}\:{as}\:{shown}. \\ $$
Commented by TheSupreme last updated on 05/Feb/21
![V_i =(x_i ,y_i ,z_i )](https://www.tinkutara.com/question/Q131543.png)
$${V}_{{i}} =\left({x}_{{i}} ,{y}_{{i}} ,{z}_{{i}} \right) \\ $$