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The sides of a rectangle are (10.5 +- 0....

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

Text Solution

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Here l=`(10.5pm0.2)cm,b=(5.2pm0.1)cm`
`P=2(l+b)=2(10.5+5.2)=31.4cm`
`DeltaP=pm2(Deltal+Deltab=pm0.6`
Hence perimeter=`(31.4pm0.6)cm`
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