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The sides of a rectangle are `(10.5 +- 0.2) cm and ( 5.2 +- 0.1 ) cm`. Calculate its perimeter with error limits .

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The sides of a rectangle are `(10.5 +- 0.2) cm and ( 5.2 +- 0.1 ) cm`. Calculate its perimeter with error limits .
A. `(31.4 +- 0.6)cm`
B. `(31.4 +- 0.2)cm`
C. `(31.4 +- 0.1)cm`
D. `(31.4 +- 0.9)cm`
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1 Answer

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Correct Answer - A
`p = 2(l+b) = Delta p = 2 (Delta l + Delta b)`
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