Example 76 A container, opened from the top and made up of a metal sheet is in the form of afrustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20 cmrespectively. Find the cost of milk which can completely fill the container at the rate of 20 perlitre and the cost of metal sheet used, if it costs 8 per 100 cm2. (Take π 314)INCERT NCT 13]

Example 76 A container, opened from the top and made up of a metal she

1.	Example 76 A container, opened from the top and made up of a metal sheet is in the form of afrustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20 cmrespectively. Find the cost of milk which can completely fill the container at the rate of 20 perlitre and the cost of metal sheet used, if it costs 8 per 100 cm2. (Take π 314)INCERT NCT 13]
Answer»