In measuring the vertical angle of the s...

In measuring the vertical angle of the sector of a circle of radius 30 cms, an error of `1^(@)` is made. The error in the area of the sector is

A

`2.5pi` sq. cm

B

`25pi` sq. cm

C

`3pi` sq. cm

D

`30pi` sq. cm

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The correct Answer is:

A

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