1.

If the area of a square is (100+-0*2)cm^(2) then the side of the square is :

Answer»

`(10+-0*1)CM`
`(10+-0*2)cm`
`10*0+-0*01cm`
None of these

Solution :Area`=(100+-0*2)cm^(2)`
`impliesA=100cm^(2)` and `DELTAA=0*2cm^(2)`
`:.` Side of square `(l)=10cm`
As `A=l^(2)`
`(DeltaA)/(A)=2(DELTAL)/(l)`
`Deltal=(DeltaA*l)/(2A)=(0*2xx10)/(2xx100)=0*01` cm.
So the correct choice is `(c )`.


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