A cloth having an area of $165 {\mathrm{m}}^2$ is shaped into the form of a conical tent of radius $5 \mathrm{m}$. If the volume of the cone is $k {\mathrm{m}}^3$, then find the value of $k$ (upto one decimal place). (Take, $\text{π}=\frac{22}{7}$)

Find the volume and surface area of a sphere whose radius is:

$3.5 \mathrm{cm}$

Find the volume and surface area of a sphere whose radius is:

$4.2 \mathrm{cm}$

Find the volume and surface area of a sphere whose radius is $5 \mathrm{m}$. [Use $\mathrm{\pi }=\frac{22}{7}$]