Question

Find the ratio of total surface area of a sphere and a solid hemispohere of same radius

Answer 1

$\bf{ \underline{ \underline{Answer \: : }}}\\ \\ \large\bold\red{Answer~is \: 4:3 } \\ \\ ⟹ \frac{ \mathrm{total \: surface \: area \: of \: sphere}}{ \: \mathrm{total \: surface \: area \: of \:hemi sphere} } \\ \\ ⟹ \frac{4\pi {r}^{2} }{3\pi {r}^{2} } \\ \\ ⟹ \frac{4 {r}^{2} }{3 {r}^{2} } \\ \\ ⟹ \mathrm{ \: radiuses \: are \: same \: therefore \: } \\ \\ ⟹ \frac{4}{3} \\ \\ ⟹4:3 \\ \\ \mathrm{mark \: as \: brainliest \: answer \: a nd} \\ \mathrm {plz~ follow~ me.}\: \:$