Volume and surface of solids

What is the area of a metal plate needed to produce one bucket? The bucket is in the shape of a frustum of a cone as shown in the picture. The top and bottom diameters are $23\mathrm{cm}$ and $18\mathrm{cm}$ and the slant height is $17\mathrm{cm}$. Round your result to $1$ decimal place.

A frustum of a pyramid has square ends and the squares have sides $18\mathrm{cm}$ and $6\mathrm{cm}$ long, respectively. Calculate the surface area of the frustum if the perpendicular distance between its ends is $8\mathrm{cm}$.

A frustum of a pyramid has rectangular ends and the sides of the base are $8\mathrm{cm}$ and $6\mathrm{cm}$ long. Find the volume of the frustum knowing that the area of the top end is $12{\mathrm{cm}}^2$ and the height of the frustum is $5\mathrm{cm}$.