ಸದಸ್ಯ:Geetha gowda/sandbox

1. OA=OB=OC=...=OH=r
2. ${\tfrac {4}{3}}\pi r^{3}$ $4\pi r^{2}$
3. $x^{2}+y^{2}+z^{2}=r^{2}$
4. $(x-g)^{2}+(y-f)^{2}+(z-h)^{2}=r^{2}$
5. $x^{2}+y^{2}+z^{2}-2gx-2fy-2hz+g^{2}+f^{2}+h^{2}-r^{2}=0$
6. $x^{2}+y^{2}+z^{2}$
7. S $\equiv \!\,$ $x^{2}+y^{2}+z^{2}+2gx+2fy+2hz+c=0$
8. P $\equiv \!\,$= $lx+my+nz+1=0$
9. $\angle AOP=\angle BOP$ =90°
10. $\angle AOQ\neq$ 90°
11. $\sigma _{1},\sigma _{2},\sigma _{3}$
12. ${\tfrac {\pi h}{6}}$$(3a^{2}+h^{2})$
13. $\pi (a^{2}+h^{2})$

1. $4pr^{2}$
2. $r_{1},r_{2}$
3. ${\tfrac {\pi h}{6}}$$(3r_{1}^{2}+3r_{2}^{2}+h^{2})$
4. $B_{1}(=pr1^{2})$
5. $B_{2}(=pr2^{2})$
6. ${\tfrac {h}{6}}$$B_{1}+4M+B_{2}$
7. $r_{1}=r_{2}=o$
8. $B_{1}=B_{2}=0$
9. $M=\pi r^{2}$
10. ${\tfrac {2r}{6}}$$4\pi r2$ = 4/3 $\pi r3$.