Question

a barrel of Fountain pen ,cylindrical in shape is 7 cm long and 5 M M is diameter .A full barrel of ink in a pen is used up on writing 3300 world's on an average how many word can be written in a bottle of ink containing one fifth of a litre? ​

Answer 1

$\huge{Heya!}$

first find the volume of cylinder

πr^2h,r=0.25cm

22/7*0.25*0.25*7

=1.375cm cube

we know that 1liter=1000cm cube

?=1.375cm cube

x=0.001375 liters

So if 275words is written by 0.001375 L

how many words will be written by 1/4 l=0.25l

275=0.001375

?=0.28

x=275*0.28/0.001375

x=56000

therefore 56000 words can be written by 1/4liters of ink

Answer 2

Heya!

first find the volume of cylinder

πr^2h,r=0.25cm

22/7*0.25*0.25*7

=1.375cm cube

we know that 1liter=1000cm cube

?=1.375cm cube

x=0.001375 liters

So if 275words is written by 0.001375 L

how many words will be written by 1/4 l=0.25l

275=0.001375

?=0.28

x=275*0.28/0.001375

x=56000

therefore 56000 words can be written by 1/4liters of ink