Question

A 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 is used upon writing 330 words on an average

Answer 1

Answer:

volume of ink in the Pen=πr^2h

22/7xo.25^2 x 7=I.375cm3

This is used for writing 330 words

The question is not complete?

Answer 2

SOLUTION

Given,

length of cylindrical shaped barrel =7cm

Diameter of barrel= 5mm= 5/10cm

Therefore,Radius of barrel=5/20= 1/4cm

Volume of cylindrical barrel =πr^2h

=) 22/7× (1/4)^2× 7

=) 1.375cm^3

Now, volume of ink in the bottle= 1/5th of (1 litre)

=) 1000/5cm^3 (1 litre= 1000cm^3)

=) 200cm^3

Now, one full barrel can write 330 words

=) 1.375cm^3 of ink write 330 words

=) 200cm^3 of ink can write

=)330/1.375× 200 words

=) 48000 words

hope it helps ☺️