MCQ
Write the correct answer in the following:
The total surface area of a cone whose radius is $\frac{\text{r}}{2}$ and slant height 2l is:
The total surface area of a cone whose radius is $\frac{\text{r}}{2}$ and slant height 2l is:
- A$2\pi\text{r}(\text{l+r})$
- B$\pi\text{r}\Big(\text{l+}\frac{\text{r}}{4}\Big)$
- C$\pi\text{r}(\text{l+r})$
- D$2\pi\text{rl}$
