Question

please answer my question​

Answer 1

Let the height be h and 2h and radii be r and R.

∴

$\pi {r}^{2} h = \pi {R}^{2} 2h$

$⇒ {r}^{2} h = {R}^{2} 2h$

$⇒ \frac{ {r}^{2} }{ {R}^{2} } = \frac{2h}{h}$

$⇒ \frac{ {r}^{2} }{ {R}^{2} } = \frac{2}{1}$

$⇒ \frac{r}{R} = \frac{ \sqrt{2} }{1}$

⇒r:R = √2:1

Hope it helps! ♡