A container made of a metal sheet open at the top is of the form of fr

1.	A container made of a metal sheet open at the top is of the form of frustum of cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find (i) the cost of metal sheet used to make the container if it costs Rs 10 per 100 cm2 (ii) the cost of milk at the rate of Rs 35 per litre which can fill it completely.
Answer» A container made of a metal sheet open at the top is of the form of frustum of cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find (i) the cost of metal sheet used to make the container if it costs Rs 10 per 100 $c m^{2}$ (ii) the cost of milk at the rate of Rs 35 per litre which can fill it completely.

A container made of a metal sheet open at the top is of the form of frustum of cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find (i) the cost of metal sheet used to make the container if it costs Rs 10 per 100 cm2 (ii) the cost of milk at the rate of Rs 35 per litre which can fill it completely.

Answer»

A container made of a metal sheet open at the top is of the form of frustum of cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find

(i) the cost of metal sheet used to make the container if it costs Rs 10 per 100 $c m^{2}$

(ii) the cost of milk at the rate of Rs 35 per litre which can fill it completely.

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