Question

A bucket made up of a metal sheet is in the form of a frustum of a cone.Its depth is 24 cm and the diameter of the top and bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket if the rate of the milk is Rs.20 per litre.

Answer 1

The cost of milk is Rs.163.28
approx. Rs.163.3

Answer 2

Answer:

Step-by-step explanation:

h=24 cm

R=15 cm

r=5 cm

volume=1/3*pie*h(R^2+r^2+Rr)

=1/3*22/7*24(15^2+5^2+15*5)

=1/3*22/7*24(225+25+75)

=22/7*8*325

=176/7*325

=57200/7

=8171.4 cm^3

    1l=1000 cc

=8171.4/1000

=8.1714L

cost=8.171*20

=163.42 /-