Question

4. The barrel of a fountain pen, cylindrical in
shape, is 7 cm long and 5 mm in diameter
A full barrel of ink in the pen will be used
up on writing 440 words on an average.
How many words would use up a bottle of
ink containing one-fourth of a litre?​

Answer 1

Answer:

Step-by-step explanation:

Volume of barrel =πr2h

Volume of a barrel =(722​×0.25×0.25×7)cm3=1.375cm3

Volume of ink in the bottle =51​litre=51000​cm3=200cm3

Total number of barrel that can be filled from the given volume of ink =1.375200​

So, required number of words =1.375200​×330=48000