1.

If L = 2.06cm +- 0.02cm.

Answer»

`3.17cm +- 0.05cm`,
`2.06cm +- 0.05cm`
`3.17cm +- 0.2cm`
`3.17cm +- 0.03cm`

SOLUTION :LET `x=L+B = 3.17, DELTA x = Delta L + Delta B= 0.05`
`:. X +- Delta x = 3.17 +- 0.05`


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