Question

the barrel of a fountain pen cylindrical in shape is 7 cm long and 2.5 mm in radius .A full barrier of ink in the Pen is used for writing 440 words on an average . How many words would use up a bottle containing 200cm cube ?????

Answer 1

volume of pen=πr^2h=38.5 cm^3
so 38.5 =440 words
200= ?
no words= (200*440)/38.5

Answer 2

Answer:

64233 words would use up a bottle containing 200 cm cube.

Step-by-step explanation:

Given : The barrel of a fountain pen cylindrical in shape is 7 cm long and 2.5 mm in radius . A full barrier of ink in the Pen is used for writing 440 words on an average.

To find : How many words would use up a bottle containing 200 cm cube?

Solution :

The barrel of a fountain pen cylindrical in shape is 7 cm long and 2.5 mm in radius.

r=2.5mm=0.25 cm

Volume of the pen is

V=πr²h

V=(3.14)h

V=3.14*0.25*0.25*7 cm³

V=1.37 cm³

For 1.37 cm³ = 440 words

1 cm³ = 440/1.37 words

200 cm³ = (440/1.37)*200 words

200 cm³ = 64233.5 words

Therefore, 64233 words would use up a bottle containing 200 cm cube.