The barrel of a fountain pen is cylindrical in shape which radius of base as 0 7 cm and is 5cm long ...........

Quantitative Aptitude ( CCS) Mensuration 3D

The barrel of a fountain pen is cylindrical in shape which radius of base as 0.7 cm and is 5cm long. One such barrel in the pen can be used to write 300 words. A barrel full of ink which has a capacity of 14 cu cm can be used to write how many words approximately?

654

524

358

545

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Explanation:

Volume of the barrel of pen = πr2
h = 22/7 *0.7*0.7 * 5 = 7.7 cu cm
A barrel which has capacity 7.7 cu cm can write 300 words
So which has capacity 14 cu cm can write =300/7.7 * 14 = 545 words

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