Question

A barrel of fountain pen cylindrical in shape is 7cm long and 2.5mm in diameter.a full barrel of ink is used for writing 440 words.then how many words can be written using a bottle of ink containing 200cm^3 of ink (those who give the right ans with explanation will be marked brainliest)

Answer 1

Hi there!


Here,
r = 2.5 mm
h = 7 cm

Volume of fountain pen = πr²h

= 22/7 × (2.5/10)² × 7

= 22 × 6.25/100

= 137.5/100

= 1.375 cm³

We know,
Full barrel can write 440 words

Since, Bottle of ink has 200 cm³ ink

Total no. of refills possible = Vol.of bottle/Vol. of fountain pen

= 200 cm³/ 1.375 cm³

= 200/ 1.375

Now,
Number of words that can be written from 1 bottle of ink = No. of words × No. of refills

= 440 × 200/ 1.375

= 64,000 words

Hence,
The Bottle will help writing 64,000 words

[ Thank you! for asking the question. ]
Hope it helps!

Answer 2

Hey there!!!
I'm sure about my answer ...


Hope it Helps..
See the attachment ..

plzz mark as Brainliest one