A semicircular sheet of metal of diameter $28 \mathrm{cm}$ is bent into a form of open conical cup. The capacity of the cup$=$_____${\mathrm{cm}}^3$.

A cloth having an area of $165 {\mathrm{m}}^2$ is shaped into the form of a conical tent of radius $5 \mathrm{m}$

(i) How many students can sit in the tent if a student, on a average occupies $\frac{5}{7} {\mathrm{m}}^2$ on the ground?

(ii) Find the volume of the cone.