Volume of a frustum

Q. A milk container of height $16cm$ is made of metal sheet in the form of a frustum of a cone with radii of its lower and upper ends as $8cm$ and $20cm$ respectively. If the approximate cost of milk at the rate of $Rs.22$ per litre which the container can hold is Rs___________.

Q.

A clown’s cap is in the shape of a cone of height 8cm and diameter 12cm. A cut is made from the apex of the cone such that slant height of the newly formed cone is 5cm. Find the ratio of volume of the frustum of the cone formed due to the cut to the volume of the cap.

1. 0.3

2. 0.325

3. 0.35

4. 0.875

Q.

A frustum of height 14 cm and radii 3 cm and 9 cm is filled with water upto the brim. Find the quantity of water in the frustum.

1. $5148c{m}^3$
2. $1700c{m}^3$
3. $1716c{m}^3$
4. $572c{m}^3$

Q. The radii of two circular ends of frustum shape bucket are $14$cm and $7$ cm Height of the bucket is $30$cm. How many litres of water it can hold? ($1$ litre =$1000$cm) ?