A bucket is in the form of a frustum of a cone. If the height of the bucket is $16 \mathrm{cm}$ and the radii of the upper and lower ends are $18 \mathrm{cm} \& 6 \mathrm{cm}$ respectively, find the height of the cone of which the bucket is a part.

A bucket is in the form of a frustum of a cone. If the height of the bucket is $16 \mathrm{cm}$ and the radii of the upper and lower ends are $18 \mathrm{cm} \& 6 \mathrm{cm}$ respectively, find the capacity of the bucket (in decimal form).

A bucket is in the form of a frustum of a cone. If the height of the bucket is $16 \mathrm{cm}$ and the radii of the upper and lower ends are $18 \mathrm{cm} \& 6 \mathrm{cm}$ respectively, find the slant height of the bucket.

A bucket is in the form of a frustum of a cone. If the height of the bucket is $16 \mathrm{cm}$ and the radii of the upper and lower ends are $18 \mathrm{cm} \& 6 \mathrm{cm}$ respectively, find the surface area of the bucket (in decimal form).