The length and breath of a recantangular object are `25.2cm` and `16.8cm` respecitively and have been measured to an accuracy of `0.1cm`. Relative error and percentage error in the area of the object are

Options

A. `0.1 & 1%`
B. `0.02 & 2%`
C. `0.03 & 3%`
D. `0.4 & 4%`

Answer

A

Explanation

`A = l xx b , (Delta A)/(A) = (Delta l)/(l) + (Delta b)/(b)`
`(Delta A)/(A) xx 100 = ((Delta l)/(l) + (Delta b)/(b)) xx 100`