A container made up of metal sheet is in the form of a frustum cone of height $20$ cm with radii of its lower and upper ends $4$ cm and $16$ cm respectively. The amount of liquid the container can hold is (Use $\pi =3$)

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A container made up of a metal sheet is in the form of a frustum of a cone of height 16 $cm$ with radii of its lower and upper ends as 8 $cm$ and 20 $cm$ respectively. Find the cost of the metal sheet used, if it costs ₹ 5 per 100 $c{m}^2$. (Take $\pi$ = 3·14)

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Question 12
A milk container of height 16 cm is made of metal sheet in the form of a frustum of a cone with radii of its lower and upper ends as 8 cm and 20 cm respectively. Find the cost of milk at the rate of ₹ 22 per litre which the container can hold.

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. Question 12
A milk container of height 16 cm is made of metal sheet in the form of a frustum of a cone with radii of its lower and upper ends as 8 cm and 20 cm respectively. Find the cost of milk at the rate of Rs. 22 per litre which the container can hold.

Q. A bucket of height $16cm$ made up of metal sheet is in the form of frustum of a right circular cone with radii of its lower and upper ends as $3cm$ and $15cm$ respectively. What is the slant height of the bucket?