The $TSA$ (Total Surface Area) of a hemisphere is equal to $\ldots \ldots \ldots$

The surface area of a sphere is $\ldots \ldots$

Curved surface area of a cylinder $= \ldots \ldots \ldots \ldots$

The curved surface area $(CSA)$ of a cone is $\ldots \ldots$

For a cone,$l = \ldots \ldots \ldots \ldots$

Write 'True' or 'False' and justify your answer:
The curved surface area of a frustum of a cone is $\pi l(r_{1}+r_{2})$,where $l = \sqrt{h^{2}+(r_{1}+r_{2})^{2}}$,$r_{1}$ and $r_{2}$ are the radii of the two ends of the frustum,and $h$ is the vertical height.