The length and breadth of a rectangular sheet are 25.2 cm and 16.8 cm,

1.	The length and breadth of a rectangular sheet are 25.2 cm and 16.8 cm, which have both been measured to an accuracy of 0.1 cm. Find the relative error in the area of the sheet.
Answer» Area=l×b ∆A/A=∆1/1+∆b/b =(0.1/25.2+0.1/16.8) =0.00992≈0.01 This is the RELATIVE ERROR. Percentage error =0.01×100=1%

The length and breadth of a rectangular sheet are 25.2 cm and 16.8 cm, which have both been measured to an accuracy of 0.1 cm. Find the relative error in the area of the sheet.

Answer»

Area=l×b

∆A/A=∆1/1+∆b/b

=(0.1/25.2+0.1/16.8) =0.00992≈0.01

This is the RELATIVE ERROR.

Percentage error =0.01×100=1%

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The length and breadth of a rectangular sheet are 25.2 cm and 16.8 cm, which have both been measured to an accuracy of 0.1 cm. Find the relative error in the area of the sheet.

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