Slant height of cone in terms of $r, h$ is

Slant height of cone in terms of $r, h$ is
  1. $\sqrt{r^2+h^2}$
  2. $r+h$
  3. $\sqrt{r^2-h^2}$
  4. $rh$

Solution

Pythagoras.

Asked in: MH-SSC-9

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