### কলমের কালি

##### Score: 1 Point

The volume of ink in the pens we use usually is $300 mm^2$. If we suppose the ink is coming out in cylindrical shape with a radius of $0.001 mm$, how long of a line can be drawn until the ink runs out? $\pi=3.14$

Note: Your answer should be in the meter unit. Don't write the unit in the answer box.

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First Solve @Arian_025