Fluid :(

U can yourself see the diff in volume..........but it doesnt matter becoz the points A and A' are at same level..

pressure is same.. i know that.. i am not that fool ;)

but the point here is the "force by container on floor..."

oops sory abhi i was wrong and i am confused now .tx abhi for confusing

if height is same,
then frustum will exert more force ON LIQUID,
value of force(by curved part)=mg-pgh*A;