# A cylindrical tank of diameter 3 m and height 7 m is completely filled with groundnut oil. It is to be emptied in 15 tins each of capacity 15 litres. Find the number of such tins required.

Given.

Cylindrical tank of diameter 3 m and height 7 m

Tins of capacity 15 litres

Formula used/Theory.

Volume of cylinder = πr2h

1 m3 = 1000 litres

Volume of cylinder tank = πr2h

Radius of tank = = 1.5 m

Volume of cylinder = × (1.5 m) 2 × 7 m

= 22 × 2.25 m3

= 49.5 m3

If 1 m3 = 1000 litres

Then 49.5 m3 = 49.5 × 1000 litres

= 49500 litres

Volume of 1 tin = 15 litres

Number of tins is dividing volume of cylindrical tank by volume of tins

Number of tins = = 3300 tins

3300 tins required to empty the tank

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