The total surface area of a cone whose radius is r2and slant height 2l is: A) 2πr(l+r) B) πr(l+r4) C) πr(l+r) D) 2πrl

The total surface area of a cone whose radius is r2and slant height 2

1.	The total surface area of a cone whose radius is r2and slant height 2l is: A) 2πr(l+r) B) πr(l+r4) C) πr(l+r) D) 2πrl
Answer» The total surface area of a cone whose radius is $\frac{r}{2}$ and slant height $2 l$ is: A) $2 π r (l + r)$ B) $π r (l + \frac{r}{4})$ C) $π r (l + r)$ D) $2 π r l$