1.

The radius of a circle field is 105 m. The area obtained by a sector of angle `72^(@)` is used for paddy growing. The perimeter of the sector is ______.A. 132 mB. 342 mC. 210 mD. 173 m

Answer» Correct Answer - B
Given r = 105 m.
`"Length of the sector "(l)=(72^(@))/(360^(@))xx2xx(22)/(7)xx105`
`=44xx3=132m`
`"Perimeter of the sector"=l+2r=132+2xx105`
`=132+210=342m`


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