Question

A bucket open at the top in the form of frustom has a capacity of 12308.8 cm .the radii of the top and bottom are 20 and 12 cm .fimd the geight of the bucket and area of metak sheet usee in making it

Answer 1

put the formula of frustum 1/3pieh(Rsq.+rsq. +Rr) =12308.8
from here u will get the height (h)