calculate ink of pen when it is full at 15 cm long ?...... ruppes 6
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Length of barrel = 7 cm, diameter = 5mm = 0.5 cm
Volume of cylinder =πr2h
r=20.5=0.25cm
V=722×(0.0625)×7=1.375ml
Volume of in k bottle = x1×1000=200ml
1.375 ml consumed an writing 310 words,
words consuming in 1 ink bottle
=1.375310×200
=4509.09 words
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okk why not...........
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