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The length of two rods are recorded as l...

The length of two rods are recorded as `l_(1) = (25.2 pm 0.1)` cm and `l_(2) = (16.8 pm 0.1)` cm . Find their combined length .

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The correct Answer is:
`(42.0 pm 0.2)` cm
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SL ARORA-PHYSICAL WORLD AND MEASUREMENTS-Based on Combination
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