Question Number 35595 by Rio Mike last updated on 20/May/18
$${Find}\:{the}\:{surface}\:{Area}\:{of}\:{a}\:{solid} \\ $$$${cone}\:{of}\:{raduis}\:\mathrm{3}{cm}\:{and}\:{slant}\: \\ $$$${height}\:\mathrm{4}{cm}.\:\left({take}\:\pi=\mathrm{3}.\mathrm{1}\right) \\ $$
Answered by tanmay.chaudhury50@gmail.com last updated on 20/May/18
$$\Pi{rl}+\Pi{r}^{\mathrm{2}} \\ $$$$\Pi{rl}={curved}\:{surface}\:{area} \\ $$$$\Pi{r}^{\mathrm{2}} ={base}\:{area} \\ $$