If the percentage error in measurement of radius R of sphere is 0.2%, then calculate the percentage error in its volume. If displacement of a body, S = (200 ± 5) meters and time taken by it is t = (20 ± 0.2) seconds, then find the maximum percentage error in the calculation of velocity.
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Sol. 
= 
= 3 × 0.2% = 0.6%
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