Question

The barrel of a fountain pen is cylindrical in shape. It is 7cm long and its diameter is 5mm. It can write 220 words. How many words would use up a bottle of ink containing 200 ml of ink?

could anybody answer this question?​

Answer 1

Volume of a barrel =

7

22

×0.25×0.25×7=1.375 cm

3

Volume of ink in the bottle =

5

1

litre =

5

1000

=200 cm

3

Therefore, total number of barrels that can be filled from the given volume of ink =

1.375

200

So, required number of words =

1.375

200

×330=48000

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