Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • A bucket is in the form of a frustum of a cone of height 16 cm with radii of its lower and upper circular ends as 8 cm and 20 cm respectively . Find the cost of milk which can completely fill the bucket , at the rate of  Rs. 40 per litre .

A bucket is in the form of a frustum of a cone of height 16 cm with radii of its lower and upper circular ends as 8 cm and 20 cm respectively . Find the cost of milk which can completely fill the bucket , at the rate of  Rs. 40 per litre .

(Use \Pi = 3.14)

 

 

Answers (1)

the volume of the frustum is :

=\ \frac{1}{3}\pi h\left ( r^2_1\ +\ r^2_2\ +\ r_1r_2 \right )

=\ \frac{1}{3}\pi \times 16\left ( 20^2\ +\ 8^2\ +\ 20\times 8 \right )

=\ 10449.92\ cm^3             

=   10.449 L=Capacity of the container.

Now, the cost of 1-litre milk is  Rs. 40.

Then the cost of 10.449-litre milk will be   =\ 10.45\times 40\ =\ Rs.\ 418

Posted by

Safeer PP

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE allows Class 10 students with basic math to study mathematics in 11th for 2025-26

Latest Question