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CBSE Class 9 Answered

Surface Areas&Volumes
Asked by ravikiran | 09 Jan, 2010, 01:00: PM
answered-by-expert Expert Answer

Volume of the barrel of pen = r2H = (22/7) x (2.5)2 x (7) = 137.5 cm3

1000 cm3 = 1 litre

1 cm3 = 1/ 1000 litre

137.5 cm3 = (137.5/ 1000) litre.

(137.5/ 1000) litre of ink can be used to write 310 words.

1/5  lite of ink can write = (310 x 1000)/ (137.5 x 5)

                                         = 451 words (approx)

Answered by | 09 Jan, 2010, 02:27: PM

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