A hollow cone of radius $6\mathrm{cm}$ and height $8\mathrm{cm}$ is vertical standing at the origin, such that the vertex of the cone is at the origin. Some pipes are hanging around the circular base of the cone, such that they touch the surface of the graph paper. Then, the total surface area of the figure formed will be

If the radius and the height of a cylinder are $2 \mathrm{cm}$ and $14 \mathrm{cm}$, respectively. Then, find it's lateral surface area‌ (in ${\mathrm{cm}}^2$). $\left(\mathrm{\pi }=\frac{22}{7}\right)$

If radius and height of the cylinder are $2 \mathrm{cm}$ and $14 \mathrm{cm}$ respectively and the total surface area is $A {\mathrm{cm}}^2$, then find the value of $A$. $\left(\mathrm{\pi }=3.14\right)$

If radius and height of the cylinder are $2 \mathrm{cm}$ and $14 \mathrm{cm}$ respectively and the volume $V {\mathrm{cm}}^3$, then find the value of $V$. $\left(\mathrm{\pi }=\frac{22}{7}\right)$

A cylinder is formed by rolling a sheet about its length whose dimension is $8.8\mathrm{cm}\times 2.8\mathrm{cm}$. Find the radius in $\mathrm{cm}$ of the cylinder.