A tent is in the shape of a cylinder, surmounted by a conical top. If the height and diameter of the cylindrical part are 3.5 m and 6 m, and slant…

Radius ( r ) \(\displaystyle =3 \mathrm{~m}\) \[\begin{gathered} \text { CSA of cylinder }=2 \times \frac{22}{7} \times 3 \times 3.5 \\ =66 \mathrm{~m}^{2} \end{gathered} \] \[\begin{aligned} \text { CSA of cone } & =\frac{22}{7} \times 3 \times 4.2 \\ & =39.6 \mathrm{~m}^{2} \end{aligned} \] Area of canvas \(\displaystyle =66+39.6=105.6 \mathrm{~m}^{2}\) Cost \(\displaystyle =500 \times 105.6=₹ 52800\)