Surface Areas & Volumes

A bucket is in the form of a frustum of a cone of height 30 cm with  radii  of  its  lower  and  upper  ends  as  10  cm  and  20  cm,  respectively.  Find  the capacity and surface area of the bucket. Also, find the cost of milk which can completely fill the container, at the rate of Rs 25 per litre ( use π = 3.14).