Answer to Question #127268 in Geometry for Vedant

Question #127268

The starting edge of a ruler is broken and first prominent mark on it is indicating 2.5 cm , when a pencil kept along with this ruler whose initial edge is touching 2.5 cm mark on ruler and final edge is colliding with 10cm mark on ruler, then what is the actual length of pencil?

Expert's answer

L=10-2.5=7.5 cm

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